The structure underneath the Core Four is a simple 2x2. On one axis: people you know versus strangers. On the other: one-to-one versus one-to-many. Every customer acquisition action lives somewhere on that grid. Warm outreach is people you know, one-to-one. Cold outreach is strangers, one-to-one. Content is people who came to know you, one-to-many. Paid ads is strangers, one-to-many.
Hormozi names the four explicitly in the trash-business example used to illustrate that the framework is business-model agnostic:
There are eight ways in total but today we're only going to talk about four of them and they are called, unsurprisingly, the Core 4.
The point of compressing acquisition this way is not that founders need a vocabulary. It is that founders chronically confuse activity with strategy. A founder who is "doing distribution" usually means: a few warm DMs on Monday, a podcast appearance Tuesday, three LinkedIn posts Wednesday, a cold-email batch Thursday, paid ads Friday. That looks productive. It produces nothing because no single channel ever hits the threshold where compounding starts.
The Core Four is a forcing function. If you can only commit to one channel for the next 90 days, which is it. The question is unpleasant because the answer is a closed door on the other three.