Getting started and so forth, as you suggest, is a good idea. But unless I have some way to know whether I am currently planning too much or executing too soon,

Getting started and so forth, as you suggest, is a good idea. But unless I have some way to know whether I am currently planning too much or executing too soon, I don't know whether to follow his advice or not. If I knew that generally potential entrepreneurs are too timid, than leaping ahead would be great, if trivial, advice. But that's not clear at all. We can't know how many people are merely thinking about starting companies but held back by timidity, because thoughts and planning are largely invisible. There are certainly plenty of companies that get founded by headstrong entrepreneurs that end in ruin. Maybe I'd find the article useful if the advice were restricted to low-risk startups (and a web startup is a good example of that). For something like a hardware startup, I think "just do it" is close to the worst advice you could receive. (Maybe "don't worry about manufacturing " would be worse.)