Dude it really doesnt matter that much, all stem stuff is relevant to the tech revolutions constantly happening. Just study what you find interesting since that's the thing you'll br more inclined to spend time doing and get good at. It's more about putting the time into something, anything, until you become one of the 'experts' in that field. That being said, there are certain fields with morr expansion in the future rather than contraction: would you rather learn engineering of coal mining or asteroid mining? Conventional flight tech or plasma thrusters for flying cars? Up to you bruzher