Difficult:
I think I understood the basic example that was explained in 19.1 but had a difficult time understanding the concept that was discussed in 19.2. So Alice and Bob are trying to create a shared symmetric key but I'm not sure how that is done. So I think the idea is that after the quantum bit is looked at, it changes value. I don't know how this can ever protect against someone looking at the bits and thus messing up the symmetric key between Alice and Bob.
Reflective:
I think the idea of quantum computing is very interesting because it would allow our computer to do so much more. I'm admittedly a bit fuzzy as why our computers could do so much more but I know it could allow much faster computation, which is always a good thing.
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