I went to college and we had Fortran and a little C. I stuck with the C language after college but never really got into it that deep. Then my oldest son went to college and had to take C++. He would come to me for help with his assignments and this forced me to learn the C++ side. Not that hard to make the jump from C to C++, but I could see if I had only stuck with Fortran I would of been no help.
The moral, do not be afraid to learn (if just the basics).
At this year's MD&M West show, lots of material suppliers are talking about new formulations for wearables and things that stick to the skin, whether it's adhesives, wound dressings, skin patches and other drug delivery devices, or medical electronics.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.