So I got both hard and electronic copy of this solution manual to some random physics textbook. I was trying to sell the hard copy of the manual in my university. Some guy emails me , want to buy the hard copy. However, he emailed at a bad time as I am leaving town for a couple weeks. Therefore, I can't sell it to him. However, I do have the electronic copy of the solution manual. Should I help him out by giving the electronic copy to him for free? Part of me say I should do it to help this guy (total stranger) out Part of me say No. Why? This is a complete solution manual, giving it to him in an electronic format would allow him to spread it around the class and creates unfair advantage. Besides, I don't even know this guy, why should I go out of my way to help him out? So what you guys think?