So they figure that men have about 4 hours a week more free time than women. They threw in some possible reasons. I'd like to ask a question. Who accomplishes more? Let's assume they bring in the groceries. He could carry 4 bags to her 2. It would take her twice as long, but they accomplish as much.

There might also be an issue of diminishing returns. Let's say you can get something 90% clean in 10 minutes. Let's say it takes you 2 minutes to get something 1% cleaner up to 95% and 3 minutes to get it cleaner each percent after that. If 90% would generally be considered acceptable, he would stop there. She would spend double the amount of time to move it to 95% and triple to get it 100%. The benefits would be negligible.

https://archive.is/6kybc