Facts: A DIY enthusiast uses an electric circular saw manufactured in 2018. At that time, the use of an automatic saw blade brake, which stops the saw blade immediately after switching off, was not yet mandatory and was only common in expensive professional models. The saw complies with all safety standards applicable at the time. In 2025, the DIY enthusiast slips while working and injures himself because the saw blade continues to run for a few seconds. Modern saws are now generally equipped with an automatic saw blade brake.

Question: Is the product defective?