Watch the dot, then guess how long.
When it goes dark, key in how long it was lit, to a hundredth of a second. The closer you land, the higher your precision.
5 rounds · one runWhen it goes dark, key in how long it was lit, to a hundredth of a second. The closer you land, the higher your precision.
5 rounds · one runA dot lights up and stays lit for somewhere between one and a half and eight seconds. There is no counter, no bar, and no clue about the length in advance. When it goes dark, you key in how long you think it was lit, to a hundredth of a second. Five rounds make a run.
This is a pure estimation task, the cleanest of the five: you don't have to produce anything or move at the right moment, so nothing about your reflexes is being measured. It's just your judgement of a duration against the real number.
Scoring is proportional, so a miss of 0.3 seconds on a 2-second round costs far more than the same miss on a 7-second one. Landing inside 10 per cent of the target is a solid round for most people, inside 5 per cent is good, and consistently under 2 per cent is exceptional. That is the range where you are competing against the noise in your own nervous system rather than against a lack of skill.
Starting the count late. If you begin counting after the dot lights, you have already lost a tenth or two before your first number, and that penalty is invisible because it happens every time. Either start the count on the anticipated moment the dot lights, or don't count at all. Why estimation gets noisier as the interval grows explains what the rest of the difficulty is made of.
Temvo is five disciplines, and “a sense of time” turns out not to be one skill. Most people are markedly better at some of these than others.
Or play all five in one run as today's daily challenge, where everyone gets the same rounds and you get a single shot at them.