If dinosaurs never went extinct, our world would look very different from what it is today. Here are some possible scenarios:

• Mammals: If dinosaurs had not gone extinct, mammals would not have had the same opportunity to evolve and diversify. They would still probably be small, scrawny, and very generalized. However, some experts believe that mammals would have continued to evolve and adapt to fill the ecological niches that dinosaurs once filled.

• Dinosaurs: If dinosaurs had not gone extinct, they would have continued to evolve and adapt to changing conditions. However, there is little evidence to suggest that they would have evolved into geniuses or developed human-like intelligence. They may have evolved slightly bigger brains, but they would still mostly repeat themselves, evolving giant herbivores and carnivores with small brains.

• Ecology: If dinosaurs had not gone extinct, the food chain would have been different, and the surviving species would have had to adapt to the presence of dinosaurs. The evolution of plants and other animals would also have been affected.

Overall, it is difficult to predict exactly how the world would look if dinosaurs had not gone extinct, but it is clear that the presence of dinosaurs would have had a significant impact on the evolution of life on Earth.