>>1117prolog is entirel y useless if you have to ask. you will not be hired for the kind of jobs where you need deep understanding of logic programming from day one. if you're a technician (aka web soyboy) that's by some magic forced to interact with an expert system or a semantic graph database, or you're probably going to either have a real programmer helping you or you can just figure some basic soykaf through examples.
on the other hand, if you want to be the kind of person they hire to do real work for a lot of money, you want to learn prolog even without asking on a chan. you want to learn prolog, grok its core principles, maybe lookup theory around it, and then immediately move on to learn something else. you can basically not learn it and you're still going to make money in the industry. or you learn it, AND you learn bunch of other soykaf. but if your own insatiable curiousity doesn't force you to learn prolog LIKE RIGHT THIS VERY SECOND OMG then your curiosity is also not going to be enough to learn all that other necessary stuff. it's an all or nothing, and you don't have a choice here. but hey while the valley money carousel is spinning, there's going to be plenty of jobs for web soyboys.