No matter what line of work you’re in, no matter how big or small, or how much of an expert you are, it often pays to step back and check your work. It’s even better if you can get someone else to check your work, or do a sanity check on a plan you have. As the saying goes, “given enough eyeballs, all bugs are shallow.” A bad plan or a mistake is just a bug of a different sort, one that wastes lots of time and energy in the long run if it isn’t caught up front.