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A comment on A Professor Who Was Right About Index Funds All Along. Parent comment

Re:A Professor Who Was Right About Index Funds All Along by des429 on Saturday October 22, 2016 @01:38PM (#12769637)
I had a conversation with a co worker about this. Its basic probability. Lets assume they make at least 1 trade a day and they have been doing this for the past 25 years. Its a simple binomial probability problem. For them to be correct on that many trades and it to be 'luck' would be a probability in the ~0.00001% range.
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Re:A Professor Who Was Right About Index Funds All Along by Godel_unicode on Saturday October 22, 2016 @02:38PM (#12769945)
You're assuming all trades are the same size and have the same upside (and downside) risk.
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