Actually looked back to pick it up which is causing the time to be wasted and want to save time to give away some of the value is not high things directly to the next point.
In fact, go back to pick something has led to wasted time, you want to save time by not going to give up some of the high value stuff directly to the next point.
In fact, looking back on the things that lead to a waste of time, you want to save time to give up some of the value is not high directly into the next point.