Choices

Remember the question about running or walking in the rain? Do you get wetter by running through the rain (thereby possibly hitting more raindrops) or walking (and spending more time getting wet)?
I'd like to pose a similar question about raking those golden leaves. Is it more efficient to wait until every single leaf from the tree is down and rake them all at once, or better to do it a little at a time?
You can see that my neighbor and I have a different answer to this question: