The politest way would be to say, "You data sampling is likely too small." It's pointless to discuss things with people who believe they can defy nature and probability.
Quote from FREElunch:
you know I hate calling people stupid
but, fact is most of you are not very smart, you might be smart but not THAT smart
wining on every trade is what I do in forex
though to be honest, far more is made on
futures.
but yes it can be done, and no you won't get huge amount but enough
and please don't waste your time asking for proof,
I don't work for you, I work for myself
the only thing you can take from my post is not to be closed minded