[seanhunter]

Me too. Fatfingers happen much more often than the ones that are reported, partly because it's really hard to make UX that is functional for high-performing individuals trying to respond quickly in pressure situations while also protecting them from the consequences of errors.

For example, in one old FX trading system I know about you would type in the cross you wanted (eg say GBP if you wanted GBP/USD) and the amount and then if you hit enter it would execute. If you hit F5 it would execute that number of million of that cross. So say you wanted 10 million, you could type 10000000 and hit enter or you could just go 10 F5 and it would immediately execute 10 million. (ie if you hit F5 you didn't also need to press enter).

F6 was the same, but for billion. And yes it originally had an "are you sure?" chicken box but there was only one flag to disable all chicken boxes and one of the chicken boxes on another part of the system was such a constant pain in the ass that everyone had chicken boxes disabled. So if you fatfingered and hit F6 when you meant F5 you could literally execute a thousand times as much as you intended.

Other than massive wrong amounts, the other one I've seen a lot is people buying something when they thought they were selling and vice versa.

[amaccuish]

What is a "chicken box"?

[seanhunter]

A dialog box allowing the user to “chicken out” if they have second thoughts about some important action. Usually they say something like “Are you sure? yes/no”

[amaccuish]

Thank you!