Who advices against a 100 page business plan? Is there something wrong with it? (besides spending too much time on planning?) if you could write 100 pages about your domain, wouldn't that be a good thing?
As a foreigner looking at the US I sometimes get the feeling a lot of SV startups don't work with a business plan at all, is that customary?
Shouldn't any startup at least make an 8 section business plan? (summary, idea, team, marketing, business system / organization, schedule, risks, finance).