I'm...extremely skeptical a generic "data entry job" is "high cognitive demand".

I can write new applications (atrociously) on basically no sleep, so I'm pretty skeptical "sit at this desk and enter these things" swings one way or the other (or even has much of an ability to quality check - at least the compiler will yell at me when I'm egregiously wrong).

I'd be far more interested if these people could be trusted to run heavy machinery on that schedule, or engage in a creative or hands on task like carpentry or welding. I suspect the results would be quite different.