Some of these comments have merit. Vehicles of the 1950's and 60's were much simpler and often could be repaired in a short time period. We must remember that at this time period there were very few different makes of vehicles on our roads. The number of different repair parts stocked by a repair shop could be small. A mechanic could remember the specifications and procedures for repairing such a limited variety of automobiles.
Today there are over forty different manufacturers importing or producing vehicles for Canada.
The sheer number of these vehicles makes remembering many repair procedures impossible. Fortunately technology is helping the technicians. Computer information systems are available that contain shop manuals, service repair bulletins, and repair charts for almost all vehicles. These computer systems permit a technician to quickly locate the information required to repair your vehicle. A repair shop owner recently said to me it is easier to repair the new vehicles than even those built in the 1970's or early 1980's because the repair information is available and can be found easily.