38. Do I really need to accept all these cookies?

What are cookies?  
Do I have to accept them?  
Do cookies ever go away after I accept them?  
Unless it is actually physical cookies I can eat, I really don’t want them so what do I do to avoid them?  

links:
Privacy Badger 
Brave Browser 
uBlock Origin 
Episode 31 about hotel key card cookies 
Episode 33 about browser extensions 

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