When was this article written? The last time I worked in an office with 10Base2 cabling (aka "thin ethernet", using RG-58 coax about 5mm thick with BNC connecto

When was this article written? The last time I worked in an office with 10Base2 cabling (aka "thin ethernet", using RG-58 coax about 5mm thick with BNC connectors) was 1995. The last time I saw 10Base5 (aka "thick ethernet", using an extra-stiff variant of RG-8 coax about 10mm thick, in continuous runs with "vampire taps") was sometime in the late 1980s. And if the maximum cable length were simply proportional to signal propagation speed / bit rate, then why does 10Base2 have a shorter maximum length than 10Base5? They're both carrying 1e6 bits per second. Do signals really travel 3 times faster through fat coax than through thin?