I take your point and it's a good one. I Think probably a pitfall is when you never go beyond the level of detail and research of your back of envelope calculat

I take your point and it's a good one. I Think probably a pitfall is when you never go beyond the level of detail and research of your back of envelope calculation when, say, setting up a kickstarter. Manufacturing has a lot of pitfalls and it is very challenging, especially for electronics, to account for all the things that can go wrong, or all the hidden costs, or the peculiarities of retail infrastructure, supply chains, and retail, if you've never done it before. Not to discourage anyone from trying, but I think this is where a lot of crowdfunded projects can fail.