The use of tools was super important for early humans. It helped them survive and grow as a species. Here are the main points:

1. Getting More Food:

   • Using tools made hunting and gathering food easier.
   • This helped early humans eat a wider variety of foods.
   • For example, stone tools helped them start eating more meat. This change played a key role in making their brains bigger.
   • Today, modern humans have average brain sizes of about 1,300 cubic centimeters, while earlier human relatives had brains that were only 400-500 cc.

2. Building Social Connections:

   • When people worked together to make and use tools, it created stronger friendships and teamwork.
   • Groups that used tools had a better chance of surviving—possibly 50% better—than groups that didn't.

3. Thinking Smarter:

   • Using tools helped early humans develop better problem-solving skills.
   • Research shows that people who could make tools tended to have bigger brains compared to their body size, highlighting how intelligence helped them survive over time.