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Oh yes, well I started in 1970 with my first novice license and I benefited from having a dad who was an electrical engineer. To have him explain what's going on inside of the vacuum tubes, when I was 13 years old, just visualizing the electrons just bleeding off of the hot cathode that was heated up by the filament underneath it and then just being attracted through the grids up to the anode. Just imagine swarms of millions and billions of electrons bleeding off, vaporizing off of the cathode and just getting sucked over to the anionic electrode at the top. I guess I was still in high school and I took transistor theory at the local college and that was within a couple of years or two and that was a whole other world. Of course, you're remembering those changes too. We thought that tubes, just like we thought that dialed telephones were here to stay, would have occurred to us that there would someday not be dialed telephones. It never occurred to us that someday there would not be tube, hollow state vacuum tube electronics. And yes, we were in the hot cathode and I was trying to explain the smell to someone and I said it's not that they're hot tubes but it's old equipment and so the tubes are dusty and you're actually smelling the dust getting cooked by the hot tubes. So whatever the dust is, probably mostly human skin flakes.