An argument that working faster is better.

Slowness seems to make a special contribution to this picture in our heads. Time is especially valuable. So as we learn that a task is slow, an especial cost accrues to it. Whenever we think of doing the task again, we see how expensive it is, and bail.

— Speed matters by James Somers

I'm not sure about this, I tend to find that I'm better when I work at a more sustainable and slower pace.