David Moyes admits he is still slightly frustrated by the non-goals that cost his Everton side victory on Monday.
The referee's assistant made an error in calling Marouane Fellaini offside before missing Victor Anichebe's 78th minute header in the Toffees' eventual 2-2 draw with Newcastle United at Goodison Park earlier this week and the Scottish tactician admits he has thought about the decision ever since.
"We've quite often done that and not got in the position we really want to be," Moyes said ahead of tomorrow's trip to Swansea City.
"Whether that's cup finals or semi-finals or the chance to push ourselves into a really strong league position, so it's the next step we have to try to take.
"The goal-line one you can say needs technology but the offside one is not going to change, so that disappointed me as much as the goal-line one.
"Technology will come in on the goal-line, I've got no doubt about that, and I think it's moving forward.
"It's frustrating because it's their [the officials'] job to get it right and they didn't get it right but looking back at the DVD of how we played throughout the night was very good. We've been pleased with our form, with the performances of the players.
"We could have won it and there's no-one else to blame but ourselves because we were 2-1 up with a few minutes to go and we didn't see it out. We have to play the games for 90 minutes and win them ourselves."