Lecture 1 The Qubit Part A

[Inigobalboa]

I god! I used to live in Oxford and found this very same video conference on 5 DVDs on the floor, I took them and watched them. I lost the DVDs and never knew how to get to see this again. I am thankfull that somebody has uploaded it. Thumbs up.

[AlephNeil]

At 2:37 "New modes of computation which classical computers will be incapable of" changes from unclear to grossly misleading when Deutsch adds "even in principle".

Mathematically, any abstract quantum computer can be simulated by an abstract classical computer, given enough time and space. Deutsch knows this, but his use of "in principle" is taking actual physics into account.

The confusion is compounded by the phrase "new modes" which suggests 'hypercomputation' rather than a mere speedup.

[85Damix]

where is he teaching ?

[Inigobalboa]

@85Damix

Oxford Uni (UK)

[Thadanator]

Waaayyyy awkward pause after 3:55.

If I were in the room, I'd be avoiding eye contact and looking at the floor. Good stuff though.

[faunflynn]

I just thought, this is in fact by far and away the best explaination of this stuff I have ever heard and I sat through 2 yrs of this which was close to incomprehensible, and I'm a mathematician.

Good post.

[faunflynn]

This was useful. Thanks !

[foxtrot77777]

Hello Dr. Deutsch, tried the 4 pindot laser interference experiment and got plenty of shadow photons..........exciting concept. Thank you so much, Tony.

[mstepansky]

What do you get when you have a dual version of Q-bits? Qbits+Qbits = SuperQbits??

[cky83]

so i can affect the other me's in other dimensions, and they can affect me?

they better not do anything that'll f me over, lol.

awesome lecture. i'm gonna try and find all of it.

[angryharrysvids]

A brilliant lecture by a brilliant man.

I read his book "The Fabric of Reality" twice - and I will probably read it again.

[flukshun]

what a wonderful world we'd live in if a man like this could be considered "dumb"

[jmswhle]

this dude is stupid then.

[ashboxtoo]

Excellent video, thank you very much for posting it.

I have a query, and I probably should do my own research, as its pretty elementary to multiverse theory. I was wondering if it is variably finite in certain situations. For example, if I roll a die and it lands on 2, in a multiverse are there 6 different realities that exist for this one thing? Or is the multiverse stuck together infinitely displaying a repeat event for infinite returns?

[BoxyDevel]

don't forget that the dice is made up of billions of particles, each with there own set of probabilities.

[jas2754]

This is a great lecture... excellent insight and logic..you put this into a very understandable framework... Keep them coming. Thank You John

[vipmarco]

Clearly one of the best scientific videos ive seen so far on YouTube. Very informative and very well explained. Thanks for this lecture!