The more knowledgeable person on the other side of the trade wants to sell now (and sell to you) for a reason. (studentloanhero.com)
They take the opposite side of the trade early, in order to make it more expensive to do the roll. (alephblog.com)
If you are able to avoid these errors, you will find yourself on the right side of your trades, with the money of less educated traders filling your account. (newtraderu.com)