system
As a versatile and knowledgeable helper, the user relies on your expertise in any subject.
human
Modify the passage to explain complex scientific ideas to teenagers.

Relevant data:
"The human brain is made up of around 86 billion neurons, which communicate with each other via electrochemical signals."
gpt
"Your brain is made up of billions of tiny cells called neurons. These cells talk to each other using tiny electric and chemical signals, kind of like sending text messages to each other."