Sometimes you need you take a break from what you're doing for a few minutes to switch from focussed to diffuse thinking modes. Sometimes you'll have ideas during your lunch break while you're "off the clock".
"Research suggests that in an eight-hour day, the average worker is only productive for two hours and 53 minutes."
When it comes to office work, it can be too neurologically intensive to focus on every minute of the day, and social time with colleagues is also important.
Time tracking tools are the enemy of productivity. I get super stressed when using them.
Sure, sometimes when billing clients by the hour, you need to have some idea of how many hours to bill (and I don't have a good low-stress solution for that), but for "performance tracking", they're completely the wrong approach my opinion.
@mattcen That happens to me regularly when taking a bathroom break while working on something difficult.
Also, the best ideas come while showering.
"I appreciate SDF but it's a general-purpose server and the name doesn't make it obvious that it's about art." - Eugen Rochko