* Airports use English for a standard, practically, in air traffic control and in terminals. That might serve as an indicator.
* However for daily life encounters it's hard to expect any one language to be adopted by the many technologically advanced countries in the world. Most people speak only in their native tongue. If you know two languages then you have an advantage and may be chosen to translate at international meetings.
* Translate.google.com is terrific when you're at a computer working with text.
* For smartphone there is an app which hears what you say, then speaks it to someone else in a foreign language. Their reply is then translated into your language and spoken to you. It's like science fiction brought into the here and now.
With change so fast today, the field we are working in may not be active in 10 years next year , in addition to building deep knowledge and experience in a certain discipline, learning technically multilingual across other domain in IC design, it will help us have a brighter future (even if unknown).
What technically multilingual do you think we can learn to ensure a good future?
This sentence is unfortunate and may mislead reader, i think
You want to know what kind of knowledge to explore to ensure be attractive on the market, right?
Well, principles + automation in shortest terms. While, principles you can find by studying physics, automation help you find general look and analogies between various implementations. For example, you can find that nature and behavior of circuit is the same no matter if medium is an electron current, air or liquid.