We've all heard that looks can be deceiving and that we shouldn't judge a book by its cover but that doesn't exactly prevent most of us from doing it anyway from time to time.
And in some cases, there can a pretty good reason to judge things based on how they look. For instance, if your first thought when you see a carnival ride or some makeshift setup on the job is "that doesn't look safe," you're probably right.
Still, that doesn't mean it's so hard to find cases where something looked like it wouldn't work in a million years only to end up becoming the exact solution we needed at the time. Indeed, you're about to see a lot of them.