I am slow on the uptake

Towards the end of the first cable sock, I started having problems with a sore spot on my right index finger where the working yarn was wrapped around it. Now I've started the second sock, and have been grumbling to myself about the sore finger, when I suddenly remembered that, thanks to the push-me-pull-you socks, my continental knitting is now almost as good as my english, and there is no corresponding sore spot on my left index finger, so I've switched hands. Hey presto, no soreness. Wish I'd thought of it earlier ;-)