Yeah, that is right (though some will have a hard time agreeing because your definition isn't very conclusive/complete) Job wise: if you only had one language

Yeah, that is right (though some will have a hard time agreeing because your definition isn't very conclusive/complete) Job wise: if you only had one language (and did not have history as a programmer) I think it would be easiest to find employment using Javascript. The need is huge and growing all the time. Python or Ruby are pretty easy to learn and can be used for a number of different ways. If you had plenty of time (read money) then Java would be the best choice. Java easily has ten times the amount of jobs available, so you can imply that it's more useful if you want to accept that metric.