If one of the Y Combinator partners makes a follow-on investment in a company, a lazy investor might assume it's a "signal" the company is worth investing it. C

If one of the Y Combinator partners makes a follow-on investment in a company, a lazy investor might assume it's a "signal" the company is worth investing it. Conversely, if a Y Combinator partner doesn't make a follow-on investment in a company, a lazy investor might assume it's a "signal" the company isn't as attractive.