How Do You Sort of Balance, We'll Do It Later, Versus Leed Times?

In the computer architecture field, where we all sort of were born and raised, a lot of these types of things, you know, particularly if you're thinking about ix very long lead times. So how do you kind of balance, i don't know to what extent facebook is doing custom sillican? What's the thoughtful, very, very detailed way that we don't have time to do right now? A but that we can ally pivot, right?