My friend is the type of guy who is always interested in learning things that nobody else knows. For instance, when I spent some time with him 3 days ago he started talking about the importance of high quality precision wire and thermocouples. So now, I can tell you that I know quite a lot about these wires and I am aware they are more important than what most of the people think. For instance, air travel would not exist without them. Electrical heating and underfloor heating are also made possible with these wires. As you can see, they are really important.