Youre being dishonest in the debate if you claim Bitconnect has a "good mathematical backing".
Bitconnect gives you 1% return DAILY on your initial investment. Its not sustainable. Using your argument: "Name one thing that" gives you that much return on your investment and is sustainable. I will name you one thing that has 1% daily return and falls like a house of cards once people stop putting money into the scheme. Its called a pyramid scheme. Best regards Dr DMD
And you are being completely ignorant by saying Bitconnect gives 1% per day. If you have been on the website you would have known that Bitconnect does not give 1% interest daily. There are days when it even pays 0.00%, 0.04 etc.
1% interest daily is only used as a speculation. You can't just seat at the fence and expect to know how it works if you haven't even tried it out. This past weeks payout was even one of the poorest, bcus the interests were just too low.
So the interest rate varies, its not fixed. Everyday can't yield the same results when trading Crypto currency, that's a known fact, and Bitconnect doesn't disprove that fact, rather it depicts it.
Get more information before you make conclusions.