garymortimer writes: "Earlier this month, Iran's news agency provided visual evidence that its government had figured out to make a fancy new drone that could take off and land vertically. What they didn't tell us is that they used Photoshop to make it stop taking off from the roof of Japan's Chiba University, which built the aircraft and never had anything to do with Iran's alleged version of it."
Mathematics deals exclusively with the relations of concepts
to each other without consideration of their relation to experience.
-- Albert Einstein