[ar7hur]

> Palo Alto, Mountain View etc. are no more part of Silicon Valley

Seems somewhat exaggerated to me. There's definitely a shift from the valley to the city (and Palantir eating up all available space in PA sure catalyzes this process), but I wouldn't say PA/MV are "no more part of SV".

[orky56]

The sexy, consumer-focused startups are in SF and where people want to be. Down in Mountain View & Palo Alto is where the VCs, unsexy B2B startups (Box), and accelerators (YC/500) are thriving. 20 something bachelors & DINCs want to live in the city where it's fun and happening whereas mothers/fathers would rather raise a family in the suburbia of the peninsula. I won't deny the trend towards SF as VCs and accelerators are making a presence there but most are not replacing their HQs in the peninsula.

[GregorStocks]

for reference, DINC = double income no children

[phamilton]

Probably true. However, I do like the "observations from an outsider" perspective. He came to the bay area and spent all his time in SF. Therefore, from at least one persons perspective, SF is Silicon Valley and PA/MV aren't.