Sometimes I am called away from a puzzle suddenly, and while I understand the reasoning behind not having a pause button, I had hoped that by saving my progress and then exiting to the home page, I'd not only be able to pick up where I left off but also not be penalized for the time I was interrupted.
Unfortunately, those puzzles I've returned to are counting the seconds while I am away. My solving time has been recorded as more than 20,000 seconds a few times, even though the actual time I spent solving them was less than a tenth of that.
Without a pause button or a reflection of actual time spent solving the puzzle, my stats are in danger of being pretty skewed. If I try to solve the issue of inaccurate time stats by simply never going back to that puzzle, my solve rates then take a hit.
My favourite solution would be to have life never get in the way of my playing these puzzles!
But since that's hardly likely to happen...