As an engineer for 10+ years with pretty severe ADHD (unmedicated, I cannot usually even read more than a few pages of a book before either losing focus or feeling drained) I have always been aware of how much my performance fluctuates based on the cognitive load of dealing with the code I am currently working with, and how it is displayed. I half-jokingly tend to describe it to people as having a "small brain buffer…
> unmedicated, I cannot usually even read more than a few pages of a book before either losing focus or feeling drained Tangent: ADHD is strange. I have it too, and yet when it comes to reading my symptoms appear to be the exact opposite (when I was younger I could not stop reading books until I finished them, even if I ended up skipping an entire night of sleep for it). I wouldn't be surprised if in the next decades…
But you've also got to consider personal taste - hyperfixation happens when it's something you're interested in. Someone else might hyperfocus on video games, or trawling ebay, or researching a topic.