Wow, that was an awesome piece that I hadn't seen, thanks for linking to it.

I think it could be summarized as: If resources are sufficient and exact implementation does not matter, just get started, but when resources are scarce and there are many different possible ideas, with hugely different potentials, just starting won't get you very far.

In short, if you're starting a business, get started. If you're submitting a publication to one of the most exclusive journals in computer science, think things out first. Fair enough.