Technology isn't in a rut, intellectually. Sure, we haven't discovered another electricity, but that's just because there's only so much in the way of major fields of hard sciences that can be discovered. What aspects of nature we've discovered are more than enough to apply technology in incredible ways.
For instance, as it is right now, we have the technology to build human settlements on the moon, we have the technology to build a combination mp3 player / cell phone / internet interface / camera / RFID device that's portable and compact. The applications of computer technology and the internet as it connects people around the world are just incredible.
However, in addition to money problems (it'd be incredibly expensive to build that moon base it's probably unreasonable to really consider it until more cost-efficient technology is developed) the 20-year patent, along with laws pushed by powerful businesses such as Verizon (yeah, you can't modify your verizon cell phone or access their network using something else, legally) is part of what holds us back.
Really, it's generally just the state of things which holds people back. New technology comes around but it's held back until businesses are ready for it. The digital cassette tape is an example of that; the record companies wanted full control of what they sold, so they held that back until they could think up the CD (yay for that backfiring on them). If we had free energy, or incredibly cheap energy a la cold fusion, we could also have a lot more money to put into things, but as it is we have a lot of problems we are putting a lot of money toward addressing. ...Well, this post was certainly kind of aimless, wasn't it.
Anyway, I'm all for researching to find new kinds of technology, such as what science fiction has made famous. There's definitely potential in the area of physics, despite what some people think about that area.
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