Here's How I Know We're in a Tech Bubble

I was surprised but not completely flabbergasted by the phone call I received a few weeks ago. A representative of Arista Networks, a networking company I've written about recently, phoned to inform me that the company's chief executive wanted to offer me "friends and family" shares in Arista's upcoming initial public offering. The offer was explicit, down to the number of shares I'd have the opportunity to purchase at the IPO price. The caller specifically wanted me to understand this offer came directly from CEO Jayshree Ullal.