The point is that stopping breaks the "flow". So it'd be better to finish the task. However, by doing that, you train your brain into thinking that it's "OK to

The point is that stopping breaks the "flow". So it'd be better to finish the task. However, by doing that, you train your brain into thinking that it's "OK to take longer to complete a task, so no need to try to do it faster/in an efficient way".