Build a team that can iterate quickly; outsourcing coding in the early days often fails because it doesn't allow for rapid adjustments.

When developing new technology, expect that it won't work on the first try or even the tenth; it's crucial to iterate quickly and avoid anything that slows down your progress.

The speed at which a startup can iterate is a strong indicator of its potential success; great companies release updates quickly instead of waiting years.

Choosing a tech stack should prioritize what allows you to ship quickly and what you're comfortable with, rather than just picking trendy technologies.

In hard tech, the iteration cycles are much longer than in software, often due to hardware constraints or regulatory issues, which can affect how quickly you can develop and test new ideas.

Even if you start with a less scalable technology, like PHP, you can optimize it later as your user base grows, as seen with Facebook's evolution.

Choosing a tech stack that has abundant training data, like Ruby on Rails, can enhance AI performance in coding tasks due to its established conventions and similarities across codebases.

In 2015, we chose Ruby on Rails for its speed, even though it was less popular than other frameworks at the time, and it worked well for us.

Execution speed is one of the biggest advantages startups have, and you need a relentless operating rhythm to succeed.