It is commonly argued today that how we think is being transformed by new technologies. Discuss how this might have held true for those who developed fire, stone blades, ritual burial, body ornamentation and art.
We can, of course, not have any way of knowing for sure how people thought before and after they developed the technologies that you mention in this question. However, we can speculate. We can try to put ourselves in their place and think about how these developments would have changed the ways in which they thought.
The most likely change that would have occurred is that they would have come to feel more control over their environment. They would now have been able to cut food apart easily with their stone blades and to cook it over their fires. They would be able to regulate the temperature of their environment (to some degree) with fire. They would have felt that they were safer because they had fire and stone blades.
These changes might have made them think more that they were in control and less like they were simply being acted upon. They might have started to think of themselves as being more important in the overall scheme of the universe. Perhaps this is why they started ritual burial and art. Perhaps they felt more like they could control what happened to them after death and that they could use art to represent and to make sense of the world.
Thus, while we cannot be sure, we can at least speculate that these people came to feel more like they were in control of their lives.