Hearing Grant outright dissing Secans, Cosecans and Cotangens is just obnoxious. <br>He is the voice of my inspiration for mathematics, he teaches how every number and formula is beautiful, but now he throws these nice pieces of maths away, like a piece of trash. <br>Last time he made me so sad was when he critized Infinitesimals... Why would you do this? Everything in math connects to everything, even the pieces we don't think about so often.