Today is Friday 31st of July, which I think should be called White Friday and a day of universal superstition of good luck.
When you think about it, every month of the year contains a 13th day of the month. Since any month can start of any day of the year, then statistically there's a 1 in 7 or 14.258% chance of there being a Friday 13th in any given month.
But only 7 of the 12 months of the year actually have a 31st day of the month in them. A 1 in 7 chance of something that's 7 in 12, gives you a 1 in 12 chance of it happening or only an 8.333% chance of there being a Friday 31st.
Does this mean by inference that because a Friday 31st is only 58.444% as common as Friday 13th, whether or not it should be 71.102% luckier (being the inverse)?
Should I now throw pepper over my right shoulder, let white cats cross my path and start gluing mirrors back together?
I'm still not going to walk under a ladder though. That has nothing to do with luck, that's simply good advice... stuff could fall on your head!
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