Real happiness comes form something that truly makes you happy, like the summer time or your dog or something like that. Synthetic happiness comes from something that may not always make you happy because you may be stuck with it. It is something that was important to the speakers so he decided to conduct an experiment about it. There have been a few experiments done on the is topic.
An example of synthetic happiness comes from an experiment conducted by the speaker. The experiment was to give a person a choice between two pictures, one group could chose one and that was that, but the other group was able to change their choice after a week if they don't like their decision. When the person was given the choice they often returned. Most people returned to change their choice because they weren't happy with their original choice. The other group was asked a week later if they liked their choice and they said that they were happy with it. They were stuck with their original choice and almost everyone liked it.
This shows that people will create a sense of happiness, even if they aren't very happy with a situation. They will find a way to be happy about it. Real happiness is a better happiness to have, but it also good to be able to create your own sense of happiness.