I'm interested to know how you would be able to identify that "yes, this memory is being stored to chip"
		
		
	 
Even if it is something you have to set up before hand, like turning on a video camera, it would be very useful. Well, maybe. Mattering on how playback works. Do you just 'know' the information when the chip is in, or do you have to access it in real time, requiring mental effort? If it needs to be accessed it might not be much different then reading the book again. In that case the technology has very limited uses, probably limited to recordation of important events and perhaps entertainment.
	
	
		
		
			I'm especially interested to see what happens when you do swap chips. Do the memories just get overwritten? or does your mind try to interpret them? Perhaps it will just give you a memory of the craziest drug trip you've never experienced.
		
		
	 
You mean if they are one brain only? Personally, I doubt that they would be 'one brain only' devices, the human brain is amazing at code breaking. I think it would be like learning a new language, it would take some time, but eventually you would start to make sense of it. 
	
	
		
		
			
. It would be amazing to see what we could store and what that data looks like when plugged into a computer.  Heck, this does potentially open the gateway for absolute "brain->computer" interfaces. If they get to the point where they can transfer data to the brain, The first thing I'm doing is downloading the wikipedia 

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The human brains stores information in a chemical medium more then an electrical one. So I don't know if a computer could read it. If so, I would imagine it would look like a giant database with almost every bit of data correlating to every other bit. 
	
		
	
	
		
		
			8 year degrees will become a $250,000 purchase and you get it instantly. You'll have 18 year olds performing advanced surgery.
		
		
	 
Knowing information is not the same as having a skill. Knowing where all the organs are would not be the same as having the skill to cut someone open and remove a tumor. That takes practice. There would be certain fields that a technology like this could make obsolete altogether, others would be almost completely untouched. The playing guitar example is an apt one, knowing how to hit all the cords is not the same as being able to play a song. Otherwise anyone that knew how to read sheet music and could watch a youtube video would be Stevie Ray Vaughan.