An Idea or A company?

There's a specific kind of gap between "I have an idea" and "I have something an investor would call a company," and almost nobody talks about how wide it actually is.

You know your product. You don't know that a TAM without a cited source reads as an instant credibility flag, or that "SAM" and "SOM" mean different things to different investors, or that a cap table question at the wrong s
tage can stall a conversation that was otherwise going well.

None of this is written down in one place for a first-time founder. It's tribal knowledge, passed around accelerator cohorts and Twitter threads, assembled by osmosis if you're lucky enough to be near people who already know it.

If you're not, if you're a student, or building somewhere without a dense founder network, you're translating your own idea into a language you're learning in real time, usually under the exact conditions (a fast-approaching pitch, a warm intro that won't wait) where getting it wrong costs you the most.