> Tester said: “I think when you get into other areas like cellphones and TVs and all that kind of stuff, it brings in all sorts of other issues that I am personally not as familiar with as agriculture. That’s not to say that those other issues aren’t really, really important. What it is to say is that I know this issue reasonably well, and I thought this is an issue that we need to deal with, and the sooner the better.”
Of course you don't understand all possible economic sectors and the issues they face. You're a Senator. You can't be expected to have personal expertise on everything. But it's your job to represent everybody anyway, not just the people working in whatever sector you used to work in before you became a Senator. This is why you have a staff. If you don't understand broader technology, hire people who do.