Runway

Where it is explained in full

Break even and runway: two numbers every owner should be able to say aloud. How many sales before the business stops losing money, and how many months of cash are left if nothing changes. Both are simple. Both are routinely unknown.

A definition says what a thing is; it never says whether it fits you. The guides explain how it works and name the professional who confirms it for a particular person. The No Advice Disclosure.