is unfortunately in error in (currently) saying that the first commercial videocassette recorder is 57 years old. In fact, that dates the first commercial reel-to-reel video recording system, the 2-inch tape quadruplex system from Ampex in 1956 The first commercial videocassette system dates to 1971, and was of course the Sony 3/4 inch U-matic system, which set the pattern for its smaller Betamax cousin some years later, and the competing (and as far as many of us are concerned) inferior VHS system shortly thereafter, both using 1/2 inch tape. All of these formats are still in use. I have two active U-matic systems, plus Beta and VHS, within a 10 foot radius of where I'm sitting right now, mostly for archival transfer purposes. I once visited the Sony lab in Tokyo where U-matic and Beta were developed many years earlier. Fascinating.