So that is why is advised to copy and paste the wallet address and send to the sender of the coin and not typed.
But of course, how do you even begin to type the address out in the first place? Isn't that like unnecessary? Anyway, I think anyone attempting that has ample time on their hand and wants to waste it needlessly. Besides, mistakes are even likely to happen while typing. Again, even copying it without scrutiny can lead to errors too. So, in copying an address I've make a point of checking the first few letters, the middle letters and the last four letters. Taking one's time in doing that isn't a waste of time. It's good to crosscheck details and not be in a haste while on financial transactions. I tend to treat my financial dealings with the precision of a defence lawyer in a murder case. Errors of omission shouldn't be allowed.