> they usually go from everyone being a generalist Interesting point. At the same time, I think it won't take long at all for someone who develops a calendar

> they usually go from everyone being a generalist Interesting point. At the same time, I think it won't take long at all for someone who develops a calendar mobile app to switch to working on an email mobile app. -- But maybe you meant the email web client? (Web vs native development?) I think you're right that a VPN and related Linux kernel and networking is a different type of specialization, yes.