Some history for the students
I think this is a scam but there is history too.
The Greeks knew that the moon and the earth were balls due to the shadows that they made on the moon and the sun. They knew through experiments that only a sphere would cast, under all circumstances, the circular shape we can see during an eclipse.
They knew how big a sphere the earth was thanks to geometry, deep wells and the sun standing over head at noon. I'll leave it to others to explain how that worked.
I still maintain that this is a scam, that rocket with a man on board won't go 50 feet but there has to be a way to extract $ from the gullible.
Remember P.T. Barnum "There is a sucker born every minute"
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"The well meaning have done more damage than all the criminals in the world" Great grand father "Never impute planning where incompetence will predict the phenomenon equally well" Father
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