Buddhism & realism vs. Mathieu Ricard & optimism
From my undertanding of Buddhism, one should learn to see things as they really are. This includes realistic expectations about the future. Therefore, I think that optimism, an overestimation of the likelihood of positive future events, conflicts with Buddhism - just like pessimism, which is an underestimation of the probability of favourable events.
Because of this understanding I have, I was surprised to see that Mathieu Ricard (famous Buddhist monk and French interpreter for the Dalai Lama) dedicated an entire chapter on praising the benefits of optimism in his book titled "Happiness".
Also, while he mentions several studies on the advantages of optimism, he does not mention one of the studies that has associated optimism with inappropriate risk-taking (e.g. reckless driving).
What is your opinion on this?