>> when i came into the business, john doerr and mike moritz were the legends of the game. competed with them on the google deal and messed it up. >> why? >> they presented it and we were like, oh, let it go. biggest mistake of my career. >> what did 1999 look like compared to now? why is now not a bubble? >> all i said is i think risks are too high. i never said valuations are too high. i do not see a lot of valuations -- maybe gopro. i don't see -- i look at facebook or google and they are trading at very low p/e's actually. my bigger concern has to do with the large burn rates. >> if it does not pop, what happens, is there a downswing? >> there are two things that could cause a correction. one is a macroeconomic. very hard to predict. the second would be the firms that are doing the late stage investments might change their criteria a little bit. i think that is probably the more likely near-term catalyst for something like this, where they start to ask questions about, do these companies really have a business model that can go the distance? we are more cautious. we are