Yes pitcook they get very good response but will only accept worldclass experts.
They do not need a lot , just a few. Do not know the exact number ( 3?)
Maybe Steve can help.
On the question why top experts would leave their well paid and secure job and want to take the risk to change to a start up he said something like.
These are people who understand that we are working at something extremely important and they want to be part of it. I do not remember his exact words but that's how I translate it.