[lostdog]

Often all the context you load into your head is other people's code. Sometimes you don't have control over how complex the codebase becomes. Debugging also requires a lot of context.

I didn't downvote the comment (yet), but I understand why many people did: It's incredibly dismissive and wrong! Yes, you should adopt methods for keeping the context so you don't lose it and continue from where you started. I've added plenty of tools to my mental toolbox, and now I work on more complex problems more quickly then before. However, even with good context-keeping skills, protecting a block of time will still 10x your productivity over being interrupted constantly.

Developers don't demand focus time for their own comfort. It's because the focus time is necessary for good work.