I'm sat here just checking my bank statement online. It shows that last Saturday I went to Sainsbury's and spent £16.74. That afternoon I then went to Lidl and spent .....£16.74! What a strange coincidence!
I once read that the first person to calculate the height of Mt. Everest found it to be exactly 8,000 meters (now revised to 8,848) He tried it many times and it always came to 8,000. Knowing everyone would thing his calculation was inaccurate he added a few extra meters to make it more credible.