Mekan1k wrote:Matter = Energy = Information.
Energy and matter have set maximum speeds, but information does not.
No... just no, in several different ways

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There is (theoretically) a bare minimum amount of energy you'd need to store a given amount of information, but you cannot convert information into energy. You can burn a book to keep warm, but a blank book will stave of the cold just as long as an encyclopedia that's the same size (note: please don't burn books).
'Pure information' is like 'pure energy' it's not a thing that exists or even a concept that makes any kind of sense. It's like building a car out of solid 'fast' or an oven that's fuelled by crystaline 'hot'. Like referring to lightyears as a unit of time, this is one of the things that makes physicists actually wince when they hear it.
Since information only exists as patterns in the arrangement and characteristics of particles, it is bound by the exact same speed limits as the particles that store it, a speed limit that all the major races in SOTS have learned to break. In fact there are cases where particles can travel faster than the theoretical limits for some of the information they carry, quantum tunneling for example appears to take no time at all, but it scrambles some of the tunneling particles quantum numbers (p.s. an expert in quantum physics could probably give you a much more precise description, but I think I got the basics about right).
As for information passing through a NPG, a huge amount of information that can be stored in a "smooth, dense and undifferentiated solid, without articulated parts or internal space" without an external recording of its quantum state. Just because the gate doesn't scan for some information doesn't mean it's not there. In fact the ability to send a solid undifferentiated mass implies that the pulse gate can transmit an immense ammount of information, after all, the information about a solid can be gleaned by examining it, and the exact state of every particle is a separate piece of information, even if they're all the same. (Atom 1 temperature 3K, atom 2 also 3K, atom 3 3K again, atom 4 surprisingly 3K ..... atom 3.125937*10^47 3K, just like the rest of them). Regardless of whether the gate is capable of scanning and recording all of that (deeply boring) information, it still sent it. The difficulty sending complex objects through seems to be technical, not theoretical.
I'd guess that in order to make sure something complex got through an NPG in one piece the gate would have to keep track of every object that comprises it (if you go down to the micron scale, imagine how many objects comprise a human being, and most of them are going in slightly different directions). Ensuring everything enters the gate as just one 'object' means that the gate doesn't have so much to handle, and depending on what exactly is meant by smooth and undifferentiated, that object could be very complex indeed.
If nothing else, the fact that internal spaces less than a micron are apparently fine for transport, means that you could at least store information on a nanometer scale punch card (and yes that's something you can build). In fact there could be all sorts of complex structures and behaviour going on below the micron level, and storing information there wouldn't be hard. The neutrino pulse gate apparently doesn't need to worry about things occuring at that scale, to the gate it's all one 'object'.
As for sending antimatter through the gate, antimatter is in almost every way identical to regular matter, so a dense and undifferentiated solid could include a dense and undifferentiated chunk of solid antimatter. Of course it would tend to explode on contact with regular matter, but for a fundamental particle, a 2nm gap (500 times smaller than the biggest gaps an NPG can handle) might as well be the Grand Canyon. There is easily enough complexity going on below the micron scale to make a magnetic bottle which could maintain that gap.