Some products are so functional and effective that there is little potential to improve them. The violin, for example, got its design by the Italian master violin-makers in the 17th century. Countless efforts have been made to challenge its basic construction in order to improve it, but in vain. The violin is so close to perfect that no one has come up with a fundamental improvement during the last 350 years.
Tire chains are not that old – they were patented in 1904, and ever since they have proven to be very effective for increasing traction.