The single greatest, ultimate shortcut in the entire universe is a 'wormhole'. In practice, they haven’t been discovered yet, but in theory, scientists are philosophising about them a lot. Through a wormhole, you can travel to another place in the universe faster than the speed of light. All you need for it is inflected spacetime and that’s already all around us! Gravity is also inflected spacetime. Anyways, besides these wormholes, the second ultimate shortcut in the entire universe are our super festive shoes for the holidays. In fact, it no longer matters what else you wear with them. Even if you wear a pair of jeans and a T-shirt and put on these shoes, you'll – BAM – instantly look festive. I'm going to think some more about whether this theory makes me the Stephen Hawking of shoes.