Supercell Thunderstorm in West Texas

The only 15-letter word that can be spelled without repeating a letter is “uncopyrightable”.
“My life has a superb cast, but I cannot figure out the plot.” Ashleigh Brilliant (1933 -)
All I know is that I know nothing. But how do I know………?
“The more corrupt the state, the more numerous the laws.” Tacitus.