Former Cisco CEO John Chambers says doing the same thing, even if it’s the “right thing,” for too long is dangerous. After 26 years at Cisco, the company’s former CEO and chairman John Chambers is ready to share what he’s learned with a new generation of entrepreneurs. But as a startup investor, he’s also cognizant that the speed of business is faster than ever. On the latest episode of Recode Decode, Chambers told Recode’s Kara Swisher that businesses used to have to reinvent themselves every decade to remain viable.