I think one thing we don't do enough of is prototyping. When we've built something before, we can usually estimate how long it's going to take this time if the

I think one thing we don't do enough of is prototyping. When we've built something before, we can usually estimate how long it's going to take this time if the differences are not huge and qualitative. But if we're building something new, or doing something that we've never done before, just thinking and guessing is a terrible way to estimate. We should learn to take the time to try things to see how difficult they are.