Lack of Assurance Quotes
Logicians and others often state: “It is impossible to prove a negative.” For example, there were those who suggested that the HIV virus could not be transmitted by mosquitoes. They pointed to the lack of any research proving that misquotes could not transmit the virus as evidence that there was a likely risk. However, the scientist had shown that there was not a single case yet where mosquitoes could be implicated—even in areas of high mosquito infestation. But there is no way of doing an experiment to show that in no possible case or circumstance could a mosquito transmit the virus or a butterfly or hurricanes. Generally negatives cannot be established with logical rigor.
