"It's anti-educational." What a rubbish, blanket statement. Something you hadn't thought about until 5 minutes ago should now be created for free. Get off you

"It's anti-educational." What a rubbish, blanket statement. Something you hadn't thought about until 5 minutes ago should now be created for free. Get off your high horse, if you want this to be free, by all means go and make it. Some great math books are free too, and some great ones you have to buy. To claim either is anti-educational is nonsense.