Cartoon aided design: The lighter side of computing

Product Information

fred #90: Yes, of course. But Bell’s Theorem tells us that such a simulation of our universe on a classical digital computer would necessarily be a nonlocal one (that is, the simulation would involve rapid signalling between memory cells corresponding to faraway events, violating the causal structure of the spacetime, even if we, living inside the universe, never actually experienced such signalling). If you would still only emphasize: “but it is deterministic,” then, sorry, I would have nothing to add further w.r.t. this point. I just saw this independently of your blog. I came here to see what your take on it was. My thoughts when I saw this blog entry:

Either this, or that, or both. Equivalent to the OR logic gate. Example: “I wish I were richer or more good looking” In a nutshell, Voevodsky’s philosophical agenda radically embraces, as a primary objective of mathematical practice, “to read and trust and enjoy, rather than doubt and work and eventually not read at all”; moreover Voevodsky sees “no other way for mathematics to prosper.” Yes, these philosophical ideas definitely are radical.🙂 But since *any* quantum system can be simulated on a classical digital computer, can’t we always reduce the physics of the known universe to be the output of such a simulation?No, by deterministic I mean deterministic. As in the current state follows precisely from the previous state. Like Conway’s game of life for example. Now chaos may result from following the rules. But first that chaos does not change the fact that it is fully deterministic. And secondly that chaos is irrelevant to any point about quantum mechanics.

Scott, what are the hard questions that this kid could have asked his Mom where she would not have been able to give him an answer that he’d be satisfied with? On the topic of experimental demonstration of quantum supremacy, in your initial paper on Boson Sampling with Alex, you proved that BS being efficiently solvable by a classical computer implies that the polynomial hierarchy collapses to the third level. Is there any hope for reducing the collapse level further? It seems like the primary barrier is that the universal hashing scheme gives rise to BPPI know there are quantum circuit simulators and these are useful for visualizing the operation of a QC but i can’t imagine building a useful quantum algorithm that way. I guess that’s why it’s so important to have an intuitive understanding of how QCs work? And QM is anything but intuitive. I am writing in reference to the description in ppnl #6, and not to quantum Darwinism as such. I didn’t know about qD, and just now rapidly browsed the Wiki article on it, that’s all.)

A model is a mathematical construct that describes some aspect of the material world. It’s purpose is to make visualization easy and give us an intuition for it. Another aspect of Quantum Computation that’s difficult to relate to, particularly for software engineers, is how quantum algorithms are developed. Anyway, it’s already past mid-night here, and I don’t want to be up till late every night. … So, thanks, and bye for now! Actually, even though in discussing the QM theory, people don’t directly talk of it, to each state of a QM system, there exists a different state of the environment that it is immersed in. … For the entire universe taken as an isolated system, the “environment” simply is an aspect of the same system, but it is an aspect which we don’t directly capture in the QM formalism. Class of 2020 had finished.I learned a lot by teaching the class on Sunday since March and digesting complex ideas into drawings. Hope you enjoyed it as much as I did. All the recordings can be found here.The same argument goes the other way: six months from now its going to be just as hard for someone reading this blog post to find the particular comic (unless they read comment #19 of course!). Either way, I think it’s better to provide full information — doing otherwise just offends my nerdish OCD. Even if both the categories of rules (updating and measurements) are kept deterministic, the machine would still show certain similarities to the quantum mechanical (i.e. the actually existing) world—viz., a reduction in the number of input states required to get to a given observed state.”