Ask a class a question and the same four hands go up. Choose who answers yourself and, without meaning to, you will call on the confident students, the ones sitting nearest, and the ones whose names come to mind fastest.

Drawing at random distributes attention evenly and removes the social weight of the choice. Nobody was singled out, nobody was overlooked, and the quiet student at the back gets asked as often as anyone else.

With repeats allowed, every draw is independent, which means one name can come up three times before another comes up at all. That is genuinely random and it is almost never what you want in a classroom.

Switch no-repeat on and the tool draws without replacement: each name is set aside once picked, so everybody gets a turn before anybody gets a second. For taking turns, presentation order, or working through a register, this is the setting you want.

The most common complaint about any random picker is that it is not random, usually after it lands on the same name twice in a row. Real randomness produces clumps — if it never repeated, it would be a rota, not a draw.

The matching error is assuming a name that has not come up for a while is somehow due. The wheel has no memory of previous spins, and a name skipped ten times running is exactly as likely as any other on the eleventh. If you want the run to even out, that is what the no-repeat setting is for.

The wheel and reel animations are not just decoration. A decision that people watch being made lands very differently from one announced after the fact, even when the outcome is identical — the visible spin is what makes it feel fair rather than merely being fair.

That makes it work well for lucky draws, prize giveaways and any decision where somebody is going to be disappointed. If you need to split people rather than pick one, Team Maker at cerdikcerdik.com/tools/team-maker does the same job for groups.