Grandpa likes Warren Buffet but not Bill Gates
Grandpa likes Prince Harry but not Prince William
Grandpa likes President McKinley but not President Clinton
Why is that?
"Is Grandpa right?"
Yes! He IS "right"!
He does not like LEFT-HANDED people.
He may have sinistrophobia, a fear of left-handed people.
All the people he likes are right handed. Those he dislikes are "lefties".
Bill Gates, Bill Clinton and Prince William are all left handed.
Doesn't generally like people called "Bill". Bill is short for William, so Bill Gates, Prince William and President Bill Clinton all share that name.
I believe this is because:
He loves money and the US economy! "Bills" represent outgoing money. But both Harry and Warren contain the letters "arr" which in financial terms refers to accounting rate of return, or profit.
The exception being:
He "prefers" President William McKinley to Bill Clinton, possibly because given the choice of two presidents both called William he likes the one that goes by "Bill" less?
Or maybe he makes an exception for McKinley because of his famous "McKinley Tariff" which was supposed to boost the American economy by limiting foreign imports. Bill Clinton's economic policy was the opposite of McKinley's in this regard - he set up the North American Free Trade Agreement which promotes trade outside the USA. Also President McKinley had as Vice President Garret Hobart who also has "arr" in his name.
Peoples whose initials are in Reverse Alphabetical Order.
Warren Buffet vs Bill Gates:
W. (23rd letter) B. (2nd letter) vs B. (2nd letter) G. (7th letter)
Prince Harry vs Prince William
P. (16) H. (8) vs P. (16) W. (23)
President McKinley vs President Clinton
William McKinley vs Bill Clinton
W.MK. (23,13,11) vs B. C. (2,3)
So, he likes
The alphabet to read from Right to Left