The first time I met Eoghan McCabe, the CEO and co-founder of Intercom, was at the back of a bus in Silicon Valley. The 23-year-old had joined Paddy’s Valley, a self-organised trip to Silicon Valley featuring Irish start-up founders, engineers and bloggers, who wanted to learn the secrets of the tech mecca’s success and how to replicate it. As a reporter covering technology for The Irish Times, I’d managed to convince my editor that covering the trip along with some other events happening in the Bay Area that week was worth the price of a plane ticket and hotels for…