It may simply reflect some failure in technique on the part of the chemist. One well-known example of the failure of negative evidence is the overthrow of the dogma of chemical inertness on the part of the noble gases.

• 它仅仅反映部分化学家技术上的失败。一个众所周知的负面证据失败的例子就是,关于惰性气体是化学惰性的教条的推翻。