Each Trial is a strategy a real species uses, turned into something you can run yourself in about ten minutes. Each card says what to do and why it helps.
What each Trial asks you to do, and what it does for you. Reading a Trial needs no account. 3,017 Trials across 2,325 species. Showing 301–360.
The Trial
Tape one small square per person on a shared mat or rug. Each person stamps a fast drum roll with their feet and then gives one low hooting boom from inside their own square, taking turns in a fixed order, for three full rounds.
Why it helps
A ridiculous, loud, bonding few minutes that nobody forgets.
6 minDifficulty 2
The Trial
Take an empty glass or plastic bottle. On go, hold it upright below your lower lip and blow across its mouth to make three separate, clear, low hoots within ten seconds.
Why it helps
A goofy, surprising burst of sound that is harder than it looks.
3 minDifficulty 3
The Trial
Pack three cups with sand (or garden soil): one dry, one damp and one soaked. Turn each out onto a tray as a sandcastle, then push a pencil sideways into the face of each castle to make a burrow and pull it out; bore four more burrows side by side into the face of the only castle that stands with its first burrow still open.
Why it helps
A quick hands-on lesson in why builders care so much about getting the mix right.
15 minDifficulty 2
The Trial
Make one new thing today unmistakably different from everything established around it, so that attention comes to it without being asked for.
Why it helps
New things that look like everything else get ignored and you end up asking for attention. Making it unmistakably different brings the group to it.
2 minDifficulty 1
The Trial
Spend longer preparing one thing today specifically so that it needs no protection once it starts, rather than launching it early and nursing it.
Why it helps
Launching early means you spend weeks nursing something that cannot stand on its own. Extra preparation removes that phase from your work completely.
2 minDifficulty 2
The Trial
Use one movable lamp or torch to inspect three dark gaps you normally ignore. Return anything useful you find.
Why it helps
A borrowed light turns inaccessible darkness into searchable space.
7 minDifficulty 2
The Trial
Create a small harmless warning marker using only red colour and shape, with no words, then place it beside something people should pause before touching.
Why it helps
You turn spring glow into one concrete experience with a visible finish.
10 minDifficulty 1
The Trial
Where your usual way out of a situation does not exist today, adopt a method from an entirely different field rather than adapting yours.
Why it helps
Adapting your usual method when it does not apply gets you a worse version of something that already failed. A different field's method often just works.
1 minDifficulty 3
The Trial
Set up one explicit arrangement today with someone whose blind spot is your strength and whose strength is your blind spot, and agree what each of you will report.
Why it helps
You cannot see your own blind spot, which is why you keep walking into the same thing. One explicit arrangement with the right person covers it permanently.
2 minDifficulty 2
The Trial
Keep your own watch at full strength today even inside borrowed protection, and name what the borrowed cover does not actually cover.
Why it helps
Reducing your own watch because you are inside someone else's perimeter means the thing that gets through finds you unguarded. Naming the gap keeps you ready.
2 minDifficulty 2
The Trial
Make one assessment mutual and simultaneous today, with both sides doing the same thing at once rather than one presenting to the other.
Why it helps
One side presenting to the other means you learn nothing about them while they learn everything about you. Mutual assessment is fairer and faster.
2 minDifficulty 2
The Trial
Take a job in your household or team that only one person can currently do and have the other person do it today, with the usual one watching rather than helping.
Why it helps
A job only one of you can do means that person can never be ill or away without it stopping. One handover where they actually do it removes a fragility you have been living with for years.
2 minDifficulty 2
The Trial
Treat one exchange today explicitly as a negotiation because both sides are giving and receiving, and name what each of you is actually getting.
Why it helps
Treating a two-way exchange as a favour you are doing means you give more than you get and resent it. Naming both sides balances it immediately.
2 minDifficulty 1
The Trial
Use one surface today for both protection and signalling, switching between the two by how you present it rather than changing anything.
Why it helps
Maintaining separate things for protection and for signalling costs you twice. One surface doing both means the angle you hold it at is the whole decision.
2 minDifficulty 2
The Trial
Pick a gentle, dry, grassy slope with no obstacles and set a marker at the top. Stand at the bottom with a friend three big steps behind you; when they shout go, whistle sharply and bound up the slope in springy leaps with a white cloth tucked into the back of your waistband, trying to touch the marker before they tag you, where a tag is only a light touch on the back with an open hand and the chaser stops at the marker.
Why it helps
A short, laughing hill sprint that turns a slope into your advantage.
3 minDifficulty 4
The Trial
Move one contest today onto the ground where your way of operating works and the other party's does not, and name which ground that is first.
Why it helps
Fighting on ground that suits them means losing while doing everything right. Naming your own ground and moving there usually settles it.
2 minDifficulty 3
The Trial
Cross one exposed stretch today in a few long deliberate moves with your view clear, rather than many small anxious ones, and count the moves.
Why it helps
Crossing something exposed in lots of small anxious moves means you are out there far longer and see less. A few long ones with your head up gets you across.
2 minDifficulty 2
The Trial
Pick one project that has stalled because something outside your control is missing: a reply, money, a season or a part. Put its materials in one box, mark the lid with the single event that will reopen it, and put the box away out of sight.
Why it helps
A stalled project left in view nags at you every day and drains effort you need elsewhere. Packing it away with a clear restart signal frees your attention and makes the restart quick when the moment comes.
2 minDifficulty 1
The Trial
Raise your eyeline today using a third point of support: stand on something stable, brace against a wall or a rail, and hold the raised position for two minutes while you look at something you usually only see from below.
Why it helps
Looking at a problem from the same level you always do means you keep seeing the same metre of it. Two minutes higher usually shows you the obvious thing.
2 minDifficulty 2
The Trial
Lie flat on a mat with knees bent and arms braced across your chest. On a count of three, press and rock once, then snap up to a standing stance in a single motion. Repeat the latch-and-release sequence five times with a short pause between reps.
Why it helps
You practice a stored-tension escape that rights you when you are stuck on your back.
8 minDifficulty 4
The Trial
Name one fixed, hard point in your life you can brace against when you stop, a person, a place or a routine. Use it today deliberately for one pause rather than improvising the pause.
Why it helps
Improvising where to stop means your pauses happen wherever you collapse and do not restore anything. One named hard point gives every pause somewhere to take your weight.
2 minDifficulty 2
The Trial
Before removing something that looks decorative or redundant today, find out what it is actually doing: ask, check the history, test removing it reversibly. Then decide.
Why it helps
Removing things that look redundant is how working systems break in ways nobody can trace. One check before removal costs minutes and saves you a week of confusion.
2 minDifficulty 1
The Trial
On a garden or open lawn, wearing shoes, set out a few cushions as soft markers and hide at ground level behind a bush, bench or garden furniture with a clear way out, never in an enclosed space, while a consenting seeker counts to twenty and looks for you, calling 'seen' when they spot you or after two minutes. The instant they call it, break cover and reach a marked base with at least three sharp changes of direction around the markers before they tag you with a light two-finger touch, no grabbing.
Why it helps
A burst of play that gets your heart going and your reflexes sharp.
5 minDifficulty 4
The Trial
When you get stuck on one thing today, break off within a minute and look to a person rather than continuing to work at it.
Why it helps
Continuing to work at something you are stuck on burns your afternoon and the answer was in the room. Breaking off within a minute costs you nothing.
2 minDifficulty 2
The Trial
Identify the one element your current arrangement cannot disguise today, and extend the pattern directly across it rather than working around it.
Why it helps
Working around the one thing you cannot disguise is exactly what makes it visible. Running the pattern through it is what finally hides it.
2 minDifficulty 1
The Trial
Break up the outline of one thing today rather than matching its surroundings in colour, and check from a few metres away.
Why it helps
Matching the colour still leaves your shape recognisable from a few metres. Breaking the outline is what makes you genuinely hard to resolve.
2 minDifficulty 2
The Trial
Turn the visibility of one thing down within seconds today by breaking it up rather than covering it, then turn it back up.
Why it helps
Being stuck at one level of visibility means you are either exposed when you need quiet or invisible when you need to be seen. A dial you can turn in seconds solves both.
1 minDifficulty 3
The Trial
Take something of yours that is too recognisable as one object and break it into parts that do not read as a whole: split the file, separate the sections, divide the schedule.
Why it helps
Trying to make something blend in requires you to match a background that keeps changing. Breaking how it reads as one object works everywhere and needs no upkeep from you.
2 minDifficulty 1
The Trial
Cut two identical bird-shaped pieces of card about the size of your hand. Colour one plain brown, and on the other draw bold dark bars and streaks that run across its edges, then lay both flat and uncovered on leaves, bark or a woodchip path and look at them from a fixed spot two metres away, walking there first and then standing still.
Why it helps
A slow outdoor puzzle that trains your eye for pattern and outline.
10 minDifficulty 1
The Trial
Take something that needs active supply from you and reduce its demand today until a passive source can cover it, rather than finding a bigger supply.
Why it helps
Hunting for a bigger supply is why everything you run needs you. Lowering the demand until something passive covers it means it keeps going without you.
2 minDifficulty 1
The Trial
Find an alternative route today for the one requirement that keeps forcing you into exposure, so you can stay where you are.
Why it helps
One requirement that forces you into the open is where everything goes wrong, repeatedly. Finding another route for it lets you stay hidden indefinitely.
2 minDifficulty 1
The Trial
Take a task you normally do in a held-breath sprint followed by a crash, and do ten minutes of it at a pace where you are visibly breathing easily and talking. Show the timer, the easy pace, and that you are not wrecked at the end.
Why it helps
Sprinting then collapsing means most of your day is recovery. A pace you can hold while still breathing easily finishes more by the evening and leaves you able to do it again tomorrow.
2 minDifficulty 2
The Trial
After removing one structure today, move whatever depended on it to a position that still works, rather than leaving it where it was.
Why it helps
Removing a structure and leaving what depended on it in place means that thing now fails quietly on you. Relocating it is the half of the job people skip.
2 minDifficulty 1
The Trial
Identify one reserve you are holding back for safety. Use part of it today to begin something you have been waiting for better conditions to start, and name what the reserve bought you.
Why it helps
A reserve you never spend is not safety, it is a start you keep postponing until the chance has gone. Spending part of it now buys you a head start nothing else can.
2 minDifficulty 2
The Trial
Set the timing of one thing today from the schedule of whatever actually supplies it, rather than from your own calendar.
Why it helps
Setting your timing from your own calendar means arriving when the supply is not there. Taking it from the supply means every attempt lands.
2 minDifficulty 1
The Trial
Produce a smaller version of one thing today rather than waiting for conditions good enough for the full version.
Why it helps
Waiting for conditions good enough for the full version often means you produce nothing at all. A smaller one now is real and those conditions may never arrive.
2 minDifficulty 1
The Trial
Hold yourself ready today to start within weeks of a condition appearing, rather than committing to a date, and name the condition.
Why it helps
Committing to a date for something that depends on an episodic condition means you miss it entirely. Being ready to start on the signal catches every one.
2 minDifficulty 1
The Trial
Move on today with a window that is advancing rather than staying with one source through its decline, and complete a cycle in each place.
Why it helps
Staying with one source through its decline means your second half produces nothing. Following the window gets you two full cycles in a season.
2 minDifficulty 2
The Trial
Run one short full cycle today in one place, and plan a second complete run somewhere different rather than extending the first.
Why it helps
Extending one run past its window means the second half returns nothing. Two complete runs in different places gets you twice the result for the same season.
1 minDifficulty 3
The Trial
Take something you have scheduled for an arbitrary date and re-tie it to a real trigger instead: when the money lands, when the person replies, when the weather turns. Write the trigger down and cancel the date.
Why it helps
Scheduling something for a date that has nothing to do with readiness means it arrives and you postpone it. Tying it to the real trigger means it happens the moment it can actually work.
2 minDifficulty 1
The Trial
Do one thing today in a brief exposed run and return to cover immediately afterwards, keeping the run short enough to repeat tomorrow night.
Why it helps
Long exposed pushes mean you need to recover afterwards and do not go back out for a week. Brief runs with an immediate return are the only ones you keep making.
2 minDifficulty 1
The Trial
Match one thing today to the contrast level of its background rather than to its colour, and allow it to be loud if the background is.
Why it helps
Toning something down to be unobtrusive in a loud environment makes it the only quiet thing there, and that is what draws your audience's eye. Match the contrast instead.
1 minDifficulty 3
The Trial
Make one thing today work at two distances, bold from across the room and detailed in the hand, and check it at both.
Why it helps
Something built for one distance looks wrong at the other, and you will be seen at both. One surface that works at each means you never have to choose.
2 minDifficulty 1
The Trial
Be deliberately conspicuous about one thing today inside a short window you fixed in advance, and return out of sight the moment it closes.
Why it helps
Being visible all the time means paying the risk continuously for the few moments it helps. A short fixed window gets you the same benefit at a fraction of the exposure.
1 minDifficulty 3
The Trial
Find something you keep having to clear, delete or tidy repeatedly and set up the mechanism that keeps it down by itself: the filter, the rule, the limit, the automatic sort. Build it today and stop doing the manual clear.
Why it helps
Clearing the same thing every week is a job you gave yourself and never finish. One mechanism that holds it down by itself removes the task permanently for an afternoon of setup.
2 minDifficulty 1
The Trial
Find one unfinished thing you have left somewhere you never look, such as a half-knitted scarf in a cupboard, a model kit in a box or a seedling on a cold windowsill. Bring it into the room you use most, put it somewhere warm and in plain sight, and do one small piece of work on it there.
Why it helps
Projects left in a cupboard do not grow on their own; they go cold. Keeping one close, where you see it every day, is how you actually finish the things you started and still care about.
2 minDifficulty 1
The Trial
Go into the oldest part of something you own, the bottom of the folder, the back of the cupboard, the first notebook, and bring one thing from down there up to the surface. Improve it as you bring it, then put it where it will be used.
Why it helps
Old material sits buried because nothing ever surfaces it, so you keep remaking things you already had. Bringing one thing up and improving it as you go turns dead storage into something you use this week.
2 minDifficulty 1
The Trial
Fix the footing on one thing today before doing anything else with it, and name what the better footing makes possible.
Why it helps
Working on anything while your footing is poor means every step costs you attention. Fixing it first makes all of the rest straightforward.
2 minDifficulty 2
The Trial
From one seat, send the same short useful message to three consenting people by voice, text or group chat.
Why it helps
You turn canopy resonance into one concrete, visible experience instead of an abstract idea.
10 minDifficulty 1
The Trial
Line up six paper cups or cones and put a pinch of a different coloured kitchen powder in each, such as flour, cocoa, turmeric, paprika, matcha and cinnamon. Dip the tip of one small dry brush into cup one, then each cup in order, sweeping around the inside of every cup before moving on.
Why it helps
A tiny, colourful experiment that shows how pollination really moves between flowers.
12 minDifficulty 2
The Trial
Build one defence today that works at a distance against something far too large for you to engage, and name what it is for.
Why it helps
Having only contact defences means anything much larger than you simply wins. One distance deterrent makes those threats stop bothering with you.
2 minDifficulty 1
The Trial
Fold twelve small paper tents and stand them in a line on a table. On go, brush the tip of a pipe cleaner across each tent in turn so it visibly sways, all twelve inside fifteen seconds.
Why it helps
A tense little test of speed against control.
4 minDifficulty 3
The Trial
Take one piece of work you are about to do once and structure it so a single effort produces several outputs: the session that is also notes and a post, the trip that is also three errands. Set the structure before you start.
Why it helps
One effort producing one output is why you never have anything to show for a busy week. Structuring it first so three things fall out costs no extra time at all.
1 minDifficulty 4
The Trial
Choose a corner and repurpose what is already there, such as a laundry basket, beanbag or pile of cushions, as a nest. Line it with the softest fleece or jumper you own, set a glass of water and a small snack beside it, then curl up in it and reach the cache without getting up.
Why it helps
A cosy, well-stocked place to recover in.
15 minDifficulty 1
The Trial
Cut two windows at opposite ends and sides of a long cereal or tissue box, and tape a small plastic mirror at forty-five degrees behind each window. Crouch hidden behind a sofa or table and raise the upper end just above it to look over.
Why it helps
A classic, satisfying build that actually works.
20 minDifficulty 2
The Trial
Take a source that will not simply hand you what you need and build or learn the one thing that opens it today: the query, the technique, the access request, the conversion. Then take something out of it.
Why it helps
Your tools only work on things already being handed to you, so you are limited to what people volunteer. One tool that opens closed things changes what is available to you permanently.
2 minDifficulty 1
The Trial
Draw or collage the brightest pattern you can on the inside back of a shoebox. Close the lid, cut a small peephole in one end with scissors, and shine a torch through a second hole so the pattern is lit only for the viewer at the hole.
Why it helps
A small making project with a delightful reveal to show others.
20 minDifficulty 2
The Trial
Fold a strip of card into a pair of tongs and line the inner faces with a fringe of card snipped so the teeth angle back toward the hinge. Using one hand only, pick up six paper fish or pasta pieces one at a time from a bowl, keeping every earlier catch in the beak.
Why it helps
A clever little build that shows how a small design detail changes what a tool can do.
15 minDifficulty 3
The Trial
On a tray or board, push twigs into a strip of modelling clay or play dough to make two parallel walls a finger's width apart and about a hand high. Collect five small colourful objects from around the home and arrange them at one end of the avenue as a display.
Why it helps
A small, strangely pleasing sculpture made from found bits.
20 minDifficulty 2
The Trial
Identify something abundant around you that nobody uses because it is awkward to get into, then build or learn the one specific thing that opens it. Open it today and take something out.
Why it helps
Abundant things sit untouched because of one awkward barrier, not because they are worthless. Building the single tool that opens them gives you a supply with no competition at all.
2 minDifficulty 1
