The issue with not updating often enough is that if there is a zero day and you're far enough behind you will be forced to go through the pain of working out how to upgrade to the latest patched version where there may be a painful upgrade path in between
This sort of thing is also an issue for phone numbers, some other company could have used your new number for robocalls and gotten it spam blocked on Truecaller and similar services.
> the goal of a book isn’t to get to the last page, it’s to expand your thinking.
I would apply this to fiction books too. Some people consider reading fiction books a waste of time.
But fiction books too can expand your mind by exploring ideas that may not be possible in non-fiction books or exploring the same ideas but in a way that non-fiction books cannot achieve easily or at all.
On the typing point, touch typing is also really important to hone early as it can prevent neck strain vs not being able to touch type and constantly look down and up
SumatraPDF does not acquire a file lock on the pdf. This is really useful if you're debugging a process that outputs a pdf and you want to see how the pdf refreshes. With other readers the tool that tries to replace the pdf will fail as the pdf viewer has a lock on the file.