How do don pedro and his men convince benedick that beatrice is in love with him?

In "Much Ado About Nothing" by William Shakespeare, Benedick and Beatrice are seen always throwing witty insults at each other. Don Pedro and the others are convinced that Benedick and Beatrice are meant for each other, and plan to make the couple fall in love. The men trick Benedick into thinking that Beatrice is in love with him by letting him eavesdrop on a false conversation. Hero and her waiting women do the same to Beatrice.

through negative experiences we learn many things its sort of like karma if u do something bad to someone and u get a consequence u dont like the next time u wont do it again and as for positive ur not really learning anything and another example for negativity people didnt want barrack obama as president because they thought he was the worst and he was taking but now we have donald trump   and hes   is not anyone and shut down the government over sum petty stuff unlike barrack obama who shut down the government because they did not want to give health care to the community and now these people who want him out want him in now

what does the teacher mean