The bolded items were intended to reinforce the inventive principles that had changed the most in their frequency of use.
customer loyalty. The use of this principle has been accelerated through the use of advanced electronic and mechanical assembly techniques.
Self-service—When was the last time someone pumped your gas for you? Unless you live in New Jersey or Oregon (where it is illegal to pump your own), it’s been a long time for US residents. Many grocery and department stores also have self- checkout lanes. This degree of self service has been enabled by the use of bar coding
and scanning (informational resources that did not exist a decade ago), and illus- trated by the TRIZ lines of evolution to be discussed later.