Myth that socket extensions change torque wrench readings

Take two spring scales and a bungee cord. Attach one scale to a fixed position with one end of the bungee attached and the other end to the other scale and stretch the bungee until 10 pounds registers on one scale. The other scale will read the same regardless of any energy lost during the stretching process. The same would be true for a socket extension used on a torque wrench.