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Comment by enraged_camel | Hacker News Reader

So instead of a yes/no confirmation, you force the user to explicitly type what they are doing, i.e. "Sell 610,000 shares of stock X for 1 yen each."

This is similar to how Github forces you to type the name of a repository when you try to delete it.

You can also configure a threshold such that the "hardcore" prompt kicks in only if the system detects that the user is trying to do something unusual, i.e. sell a stock for much cheaper than it is.

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I like what mycelium does. You type the amount, and there's a button that will change state on every press, and cycles though "generous", "normal", "economical" and "stingy" or something like that.

That way, a user doesn't have to know what value to use. You can also set this once in settings and never see it again, except as a report.

Though I wish Github didn't do that for forks that are less than a few minutes old or have no commits...

These sorts of mistakes happened when I was trading options more than a decade ago. In most transactions, such a confirmation would have cost money on every transaction since speed matters.

Back in the old days, I feel the broker would have gone to the market makers, said there was an error, and gotten out of the trade.

>>In most transactions, such a confirmation would have cost money on every transaction since speed matters.

Which is why I said you would enable it based on a threshold and/or only on unusual threads. These systems are capable of extremely complex decision-making at very high frequency. Surely something like "sell 610,000 shares for 1 yen" would have stood out as strange.

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