“Whenever there is any doubt, there is no doubt.” The line is from the inimitable David Mamet, a quote from Ronin, one of my all-time favorite movies. A laconic reminder to always be decisive in battle and in business, and at a most basic level, to trust your gut. In my line of work, this often enough translates to “fire early,” too. When you aren’t sure about a key employee or a co-founder, odds are exceedingly low your mind will be changed for the better.