If lightsabers can cut through anything, why don't more people (especially bounty hunters) carry lightsabers as a simple cutting tool?  It has been  why non-Jedi don't carry lightsabers as weapons.  However,  whether there are non-weapon items based on lightsaber technology.  But my question is different: If a non-Jedi can get ahold of a lightsaber, such as Boba-Fett, Grievous or Cad-Bane (the latter two who have used them as weapons, in fact), for example, why doesn't he keep one handy?  It doesn't take Jedi training to use one safely in order to cut things.  Han Solo has done it on occasion (on Hoth, for example, when he opened the TaunTaun) and didn't think twice about it.  And in The Force Awakens, Finn easily used a lightsaber without any training whatsoever, so it's not a matter of possessing the Force that makes the item able to be used.  [reasons why this is not a duplicate]  This question was marked as a duplicate of this: Are there non-weapon items in the Star Wars universe based on lightsaber technology?  However, just from the title you can see the scope is different.  Perhaps there are non-weapon tools based on lightsaber technology, but my question is whether non-Jedi carry lightsabers, it has nothing to do with non-weapon, non-lightsaber tools.  [later]  Some of the replies below maintain that non-Jedi people cannot carry a lightsaber because of various reasons.  It seems to me that Jedi would certainly be more skilled with a lightsaber on account of their affinity with the force and the relation of the force to the kyber crystal, but other people could definitely use a lightsaber as a tool.  .
After mis-reading this question:  I found myself wondering if there are other non-weapon items such as tools that utilize lightsaber technology.  Example: the lightsaber bread knife
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Machine Learning - Where is the difference between one-class, binary-class and multinominal-class classification? Where is the difference between one-class, binary-class and multinominal-class classification?  If I like to classify text in lets say four classes and also want the system to be able to tell me that none of these classes matches the unknown/untrained test-data.   Couldn't I just use all the methods that I mentioned above to reach my goal? e.g. I could describe C1, C2, C3 and C4 as four different trainings-sets for binary-classification and use the trained models to label an unknow data-set ...  Just by saying, Training-Set for C1 contains class 1 (all good samples for C1) and class 0 (mix of all C2, C3 and C4 as bad samples for C1).  Is unlabeled-data C1 -> 1 or 0  Is unlabeled-data C2 -> 1 or 0 ... and so on ...  For multinominal classification I could just define a training-set containing all good sample data for C1, C2, C3 and C4 in one training-set and then use the one resulting model for classification ...  But where is the difference between this two methods? (except of that I have to use different algorithms)  And how would I define a training-set for the described problem of categorizing data in those four classes using one-class classfication (is that even possible)?  Excuse me if I'm completely wrong in my thinking. Would appreciate an answer that makes the methodology a little bit clearer to me =) Show that every prime $p&gt;3$ is either of the form $6n+1$ or of the form $6n+5$, where $n=0,1,2, \dots$ Stone-Weierstrass theorem with $p(1/x)$ I am trying to prove that for a continuous $f\colon[1,\infty)\rightarrow\mathbb R$ and $f(x)\to a$ as $x\to\infty$ it could be approximated by $g(x)=p(1/x)$ where $p$ is a polynomial. Assuming I'm paying long term capital gains tax, what is the break even point where it is more worthwhile to switch from one fund to another?  For (a hypothetical) example, if I have a fund with an expected return of 3.5%, what would be the minimum expected return of another fund to make it worthwhile to pay the capital gains tax and switch to the other fund?  (I'm assuming the answer to this question is an equation involving investment horizon, capital gains tax rate, and my current taxable gains) This question attempts to collect a community-maintained list of quality books on the  programming language, targeted at various skill levels.  C is a complex programming language that is difficult to pick up on-the-go by reading online tutorials. A comprehensive book is often the best way to learn the language, and finding a good book is the first step. It is important to avoid badly-written books, and even more importantly, books that contain serious technical errors.  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