The internet is a wonderful place where you can stumble on some really incredible things. For example, last night (technically it was today) I found out that at quantum scales time can move backwards as well as forward. You can find the whole article here:
Time travel is still not possible because they basically played a guessing game about the quantum state of some microwave photons in a microwave box cooled to absolute zero and they found that 'predicting' their guesses worked backwards as well as forward and they could predict with 90% accuracy.
Of course time travel isn't a thing yet. As Professor Kater Murch of Washington University says, 'It takes 20 or 30 minutes to run one of these experiments, several weeks to process it, and a year to scratch our heads to see if we're crazy or not.' If he was onto something on the time travel front, he could've saved himself a lot of head scratching for sure.
Anyways, this is exciting coz now we need to figure out why this doesn't happen at our scale and why entropy in the universe always increases - that last bit always bothered me. All the laws of conservation spoil you with their symmetry and then you get stuck with this one quantity that always increases. Finally some wiggle room.
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