He is adamant that his feelings are genuine. One such incident is Ophelia's ambiguous death.
The film, Hamlet is a theater performance of the Shakespeare play. When being deceptive, there is chance that someone will see through the deceit and employ the use of counter-deception, which can cause a plan to fall apart at the hinges. The play has many characters, and the main ones are members of the royal family or were close to them.
He understands every situation and knows there will be consequences for his actions. In this act he is deceiving Rosencrantz and Guildenstern by ordering their death in England. Gertrude and Laertes unknowingly drink the poisoned wine that was meant for Hamlet.
To make matters even worse for young Hamlet, Claudius decided to have himself crowned as king rather than Hamlet, who was the rightful heir to the throne. Deception in Shakespeare's Hamlet.
No wonder directors seem to think it's infinitely adaptable: lies and deceit aren't limited to one time or place. The employment of the art of deception could bring a plan to success, cause a plan to fall apart, and cause the mastermind of the plan to deceive himself and go mad.
The Shakespearean literature reference, Shakespeare A to Z, explains how deception can be fatal and put a plan to a standstill.