I was like, can you think back that far,

Brant? No, in my old age.

Oh, wait.

I think AJ is a little bit older than me.

But anyway, we both have twins, right? But I had no knowledge of endothelial cells whatsoever for a long time.

So I don't know if it's a slow burn or if it's nothing at all.

But I did my PhD in epithelial cells.

So for trainees or early career investigators that are listening, what's one practical tip you wish you had known earlier? And we'll go with the OG Brant Isaacson here.