What are fuses used for?


I have, I’m sure to many, a very dumb question. I keep reading about fuses.  I have a fairly sophisticated system and have never come across the need for a fuse.
Can someone tell me where these fuses go and what they’re used for?
rvpiano

Showing 2 responses by glupson

"...we all know acoustic engineering school is a scam. They don’t teach anything to prepare you for high end audio."

Do not skip the school altogether. Apparently, more info about high-end audio education is here...

http://www.magicalwisdom.com/

"Yet capacitors are also directional due to the wire running through them."
What is the definition of "wire" for this purpose? Surely not what first comes to one's mind.