from the worth-it-for-the-screenshots dept.
benwiggy writes "Photoshop turned 20 on 10th February 2010. Here's an excellent history, including how the Knoll family created one of the biggest apps of all time. The article also has screenshots of the workspace through the versions."
Today's scientific question is: What in the world is electricity?
And where does it go after it leaves the toaster?
-- Dave Barry, "What is Electricity?"