A_154 - Conceptually, only plants have the gift of infallibility, as they are the most evolved beings: science has measured the length of their DNA which appears to be the longest of all living beings. If it has been used in any other way so far it has only been to try to make people's lives work. In general it makes sense to trust people's IQ proportionally, also considering their level of health, available resources and physical robustness.