I want to help clear up some misconceptions that exist around simulation and fouls which may well cloudy the issue for some people
Simulation has been through 3 clear stages of evolution in the last 20 years.
1: The player falls over with no contact. Then it evolved to
2: The player initiates the contact then goes down. Then its evolved to
3: The player sees the contact coming and starts the process of going down
so when they are hit, it looks like the contact has sent them to ground.
The key phrase around simulation is 'attempts to deceive the referee by
feigning injury or pretending to have been fouled (simulation)' (Page 125)
Previously we used to look at simulation and go 'Well if there is contact, it can't be simulation'. That's changed back to the original wording of 'is the player pretending to have been fouled'
What Spartacus refers to is true to a point. The LotG refer to it as a trifling foul. An example of that is where a player is on the end of a foul, but manages to ride the challenge/stay on his feet and keeps playing with possession. Generally a trifling foul is very much at the lower end of the spectrum in terms of contact. An example may well be a player that is
tripped with minimal force and he stays on his feet.
Intent that Wibblebut refers to does not exist in the LotG. That was replaced with careless, reckless and excessive force. So a foul that where you may say 'well he has no intent' is still careless in nature and is still a foul. That's the biggest misconception that still exists in the game today - the word 'intent' As referees, we now look at other things - the ability
to be able to play the ball when making the tackle, the speed of the tackle, the force of the tackle, the contact on the opponent, the part of the leg making contact, the potential for injury to the opponent (which is quite a key component as well because guys that launch into tackles and make no contact, still can endanger the safety of an opponent, which is defined in writing as a red card) and the control the player has of himself when making the tackle. A search of YouTube will show you some shocking tackles where the guy committing the foul has every intention of going for the ball. It's still a foul though based on the careless-reckless-excess force criteria
(page 117)
There will always be players that exaggerate the contact. That's for FIFA
and the IFAB to deal with in the future but that does not detract from the fact that if it's a foul, it is a foul. Referees base their decisions on the foul and contact, not the outcome and reaction.