I'm not arguing that the homeplate ump should be completely replaced by a computer. I'm arguing that a computer should take over the balls and strikes calls only. The ump can still call plays at the plate, check swings, foul tips, allow for time to be called, etc. As long as umps continue to miss 13% of their calls, a change should be made. Could you imagine the outrage if the 1b ump missed 13% of the plays at 1b?