Douglas Adams said this quote
“ So what part did I play in all this? Well, none really. They completely ignored me for the whole twenty or thirty minutes. Which was perfectly fine, of course, I didn’t mind. But it did puzzle me, because early every morning they would come yelping and scratching around the doors and windows of my house until I got up and took them for their walk. If anything disturbed the daily ritual, like I had to drive into town, or have a meeting, or fly to England or something, they would get thoroughly miserable and simply not know what to do. Despite the fact that they would always completely ignore me whenever we went on our walks together, they couldn’t just go and have a walk without me. This revealed a profoundly philosophical bent in these dogs that were not mine, because they had worked out that I had to be there in order for them to be able to ignore me properly. You can’t ignore someone who isn’t there, because that’s not what “ignore” means. ”