you would have had to come up with it a hundred years ago... it's as much part of visual communication as the light bulb idea... way to common place for any one person to lay claim to, and everyone else to be thieves... but with your name containing "think" AND already working for you in a bubble... John's ides both "justify" the bubble being there (not that you need to, but it does... to me... and that's not a bad thing) and adds visual reference to help remember the name "think" ...which is huge (in my opinion)