Vijay Iyengar (00:00): The issue for us at the time was that we took people away from the investment in our core product to go do those other things. We moved people, right? And so the trap there is that you leave yourself right for disruption in your core because someone else can out invests you in that core. And so if you are the leader in some core product, our takeaway here is you should continue to out invests everyone else in that core and then invest the profits that come out of that core into the next venture. Invest profits and not people, or venture capital, which is maybe net present value of profits or something to that effect. But don't take people away from the core to go to these other things because then you end up distracted. Lenny (00:40): Welcome to Lenny's Podcast where I interview world class product leaders and growth experts to help you get better at the craft of building and growing products. Today my guest is Vijay Iyengar. Vijay is currently head of product at Mixpanel. He actually has a very similar career trajectory to myself where he started as an eng intern at Amazon. Then he was an engineer for a while at Uber, then he became an eng manager at Mixpanel. But then he shifted from an ENG manager to director of product, and now head of product at Mixpanel. You don't often see people moving from an leadership role straight to director of product, so it was really interesting to hear what he took from his eng experience and brought into his approach to product leadership. But we spent the bulk of our time talking about what he's learned from the journey that Mixpanel has been on, where they started with a simple product, then scaled to a number of different products, solving many problems for customers, and then made the hard decision to scale back to just a single core focused analytics product. (01:33): We talk about why they made that choice, what they learned about when it makes sense to expand a new product and when you probably shouldn...