Yes, but...

Your answer to this single question actually addresses a bunch of other question (i.e. it's a signifier for a question cluster):

- Are you creating a new market or entering one with existing players? - Are you taking an $YB market and growing it or taking revenue from others (presumably by undercutting them) - Do you understand the motivations of your buyers (i.e. if you're selling motorbikes your customer base isn't all who need powered transport).

I raised $20M for Talima without any market size projection -- but I did understand the market (aging baby boomers with disposable income who, as they aged, would need the product). The macro numbers were enough.

What's Talima? All Google is giving me is a resort in the Philippines. Since I'm an aging boomer, maybe it's something I need :-)

I searched "Talima crunchbase" and came up with this:

https://www.crunchbase.com/organization/talima-therapeutics#...

Not sure if that's accurate, but they have received ~20M in funding.

Sounds like it did not go so well. What was the postmortem.