I've been reading material on this subject when it occurred to me. Lee was indeed disappointed that Stuart intelligence and arrival were delayed or abesent all together at Gettysburg. I have never read a word that Lee himself felt Stuart actions were irresponsible. By all accounts Lee's anxiety was caused by his Calvary officers unknown whereabouts. Lee himself never criticized Stuart, nor did he publically reprimand him. Others felt otherwise but Robert E. Lee did not. Why was this? I believe I know but would love to read what you think.