Is there a way of measuring how much happiness is brought about by an action? Do we have any method for comparing the happiness of two different people? If the answer to these questions is "no," is this a problem for utilitarianism?

There is no way to measure happiness.

Happiness is not a hing that we can predict in the brain, but if we could predict probably a problem for utilitarianism.

Utilitarianism is a philosophical trend that was created in the 18th century by British philosophers Jeremy Bentham (1748-1832) and John Stuart Mill (1806-1873).

This model is chosen by a moral and ethical philosophical system where a useful action is called the most correct, and hence its name. In this case, a search for pleasure is an important feature.

Therefore, as actions aim at an end where the consequences are focused on pleasure and happiness, as well as on the usefulness of these acts.

Therefore, it investigates how actions and the results they provide or well-being to sentient beings, that is, those who consciously have feelings.

The empirical mode of men is able to regulate and choose their actions. Thus, it becomes possible and half of consciousness to achieve or pleasure, at the expense of suffering and pain.