OOPSLA Conference: Growing a Language 

I hear this talk not for the first time, and I like it lots each time

Thanks for uploading a higher quality version of this great talk!

My favorite part is "This is hard!", wherever that is.

Sad, where is the version of the talk where he uses hand drawn slides on the transparency

Nice definition of "Meta" : ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-lw6TaiXzHAE.html