In recent years, a genetic test for children's talent has become popular in the parent circle. The company that provides this test claims that they can obtain the children's genes through saliva, and can analyze which "features" children have, such as musical talents, mathematical talents, Communicative ability, long-distance running ability, anti-stress ability, etc. , many parents have paid such tests for their children at high prices. They think that through this test, they can deliberately develop children's talents and potential, no longer need to try too much. Interest classes to tap children's specialities. Which of the following, if true, would most weaken the parents' perspective? ["Some teachers can also deliberately develop children's talents and potential based on their own experience.", "Compared with genetic testing for children's talents, obesity genes and cancer gene testing have a stronger scientific basis.", 'Talents are the result of multi-gene co-regulation, and it is currently difficult to accurately define which genes affect which talents.', 'Some businesses charge for whole-genome testing, but only one or a few genes are tested, and it is difficult for parents to distinguish.']