It probably took less than a second to come up with it...but a day and a half to see it. Not all of us can be "writing a thesis."
No, no. You can't fool me. The time stamp on your post says 7:39 PM Arctic Tundra time (which, of course, is my time.)
...and today was the most productive thesis-writing day in a month, so I did get fooled for a minute...
EDIT: Okay, nevermind. I see what you are saying now. Touche!
I don't even know where I am! What is happening to my brain? Productive thesis days result in my gray matter turning into a non-Newtonian fluid and gooing out my nose whenever I walk to vigorously after the work day is over.