The Big Bang Theory Season 2 19

The landlord means that in that episode, Penny was threatened by her new neighbors and deliberately found a science joke on the Internet to please Leonard and them.

this joke is about 11 minutes and 23 seconds. Here are the lines:

This physicist goes into an ice cream parlor every week and orders an ice sundee for him.

A physicist goes to an ice cream shop every week to order a sundae for himself

and then offers one to the empty stool sitting next to him

and then orders another sundae and puts it on the empty seat beside him

This goes on for a while

For a long time, He has been doing this all the time

until the owner finally asks him what he's doing

One day the shopkeeper finally asked him why he did this

The mansays, "Well I'm a physicist, and quantum mechanics teaches us that it is possible for the matter above this stool to spontaneously turn into a beautiful woman, Who might accept my offer and fall in love with me "

He said," I am a physicist, and the theory of quantum physics tells us that there is a certain chance that this chair will automatically become a beautiful woman, and this woman will probably accept my invitation and fall in love with me "

The owner then says, "Well, lots of single, beautiful women come here every day, why don't you buy an ice cream for one of them, and they may fall in love with you"

The shopkeeper said, "There are many beautiful and single MM here every day. Why don't you buy them a sundae? They may fall in love with you "

and the physicist says," Yeah, but what are the odds of that happening? "

The physicist said, "Forget it, what are the chances of this happening?"

I'm a liberal arts student, but I guess the quantum physics mentioned here is that, for example, objects are made of quanta, and quanta change randomly. So in theory, since quantum changes randomly, under a certain probability, a bunch of quanta will combine to make a beautiful woman. However, it can be imagined that such a probability is extremely close to zero, which is similar to one in a few trillion.

The punch line of this joke is that when the shopkeeper recommended him to buy ice cream for the women who actually existed in the store, the physicist refused because he thought the chances of these women falling in love with him were too small. In contrast, he thinks that the seat next to him will have a higher chance of becoming a MM who falls in love with him.