If man is totally incapable of good, then man cannot be faulted for his sins. If God has already elected those who are going to heaven, then why evangelize, seek to be saved, or even follow God's path? Your traditional Calvinist would proclaim, "Because God told us so!" But if God has already elected those who will be going to heaven, no amount of influence from Christians will change who is elected or not. Evangelism may be the means of how God saves the elect, but our conscience decision to not evangelize will not affect the elect. If God predestined everything, then there is no use in praying for your friends or family. Basically, God has already predestined the events and no appealing to God will likely change his mind- it has already been predestined and cannot be changed.