Both Allardyce and Robson heard the chants and the boos, so what does it take for someone to blank it all out and go on with life believing it didn't happen?
It is a mentality thatis beyond me. Allardyce was no more than five yards away from Newcastle fans shouting "you don't know what you're doing", and Robson was just yards from a full scale demonstration at the weekend.
I can tell both ... it DID happen! It was not a media propaganda exercise.
Robson prepares for what could be a make-or-break clash with his former club West Brom, knowing he has a meeting with the chairman tomorrow.
Did Allardyce Not Take The Hint?
The Blades start the match at The Hawthorns in 17th place in the Coca-Cola Championship.
He will not have helped his cause by blaming the negativity coming from the stands at Bramall Lane for his team's failure to beat lowly Scunthorpe on Saturday, but he feels the majority are still behind him as they prepare to face second-placed West Brom.
Robson: "It's just as well we're not bottom of the league, when you get a certain section of the fans who get together and criticise and they go that way, (but) there are also loads of fans out there who are very supportive and very helpful.
"I still think Sheffield United is a big club, it's got great potential. It is up to me and the players to get the performances right on the pitch."