We've had 4 bookings for simulation and really only one can be stated as an actual dive.
And that is the one against Hull with Willian, where he was not touched by the defender and anticipated contact.
Costa v Burnley - Heaton blatantly caught him and would have been sent off, right in front of a linesman too, who seem to do nothing.
Costa v Hull - Just because Willian and Cahill dived in this game people are immediately claiming that Costa dived too just because he got booked. Watch the footage of the incident and you clearly see Costa go down, but he doesn't claim a foul and gets straight back up to his feet, how is that a dive.
Fabregas v Southampton - No explanation evenneeded. Clear penalty.
Granted Cahill dived against Hull, no complaints there but hoe can going to ground when being caught or even touched by an opposing player(Ivanovic) be considered a dive. If anything it is a coming together.
As for diving in general, nobody shouting the odds about Barkely, Aguero etc going to ground to win penalties and just a few weeks ago James Milner won the softest pen you will ever see after a coming together with Jagielka.