Learn
Durable explainers for the concepts a profile assumes you already know.
What is a rollup?
What a rollup is, what it inherits from Ethereum, and what a maturity stage does not promise.
What these guides are for
A profile assumes you already know a handful of words. These guides are where those words get explained once, properly, so a profile can stay about the project rather than about vocabulary.
They cover what a thing is, what it inherits, and above all what it does not promise — the part most explainers skip, and the part that costs readers money. Where a guide carries a number, that number comes from a named source read on a stated date, and it is written in one place rather than repeated in five languages.
They are rewritten when the ground moves, not on a schedule, and the date at the top says when they were last checked.