Interesting peek at how we saw the universe of the big and the small before 1990. The first half, the physics and cosmology part was the best. In the math sections it started losing my interest, Chaos Theory never really did meet its hype that the 80s promised and AI is more real than imagined. As with all essay type books there is some incoherence between the essays. Having one essay of Popper juxtaposed with one by Kuhn will only lead to confusion.