> It's not so easy to build bridges that way. I'd wager that it is but the stakes for failure are too high to wing it (hopefully). Imagine: We want to build

> It's not so easy to build bridges that way. I'd wager that it is but the stakes for failure are too high to wing it (hopefully). Imagine: We want to build a bridge that spans N meters. We don't know how to do it but we can go look at an existing bridge and copy it. We might not understand metallurgy / physics that well, but we talk to suppliers and ask for "steel of this shape and size". Ditto cables, concrete and everything else. Probably, provided we're not scaling up or changing the design too much, it would work just fine.