Earlier this week, Google shocked the science and technology world when it announced that it was restructuring itself to operate its moneymaking search products separately from its loftier, long-term initiatives. Astro Teller, the visionary head of X Labs (formerly Google X), that builds those projects, spoke to Popular Science a few weeks before the announcement. He talked about dealing with investor skepticism, how to solve big problems, and much more. Here’s an excerpt:

It’s unclear where Teller’s comments stand in the context of the Alphabet reorganization. For the full interview, check out the next issue of Popular Science.