These identifications were rejected by many scholars as being improbable or at least unprovable. Instead of simply omitting unprovable, supernatural events, she invents crimes that believably suit the evidence. It is a lie based on an unprovable and mythical claim. Robert was accused by some writers of killing Richard, a plausible but now unprovable charge. While plausible, such claims are unprovable and appear only in the late tenth century. Some of these claims were subsequently found to be inaccurate or unprovable. Other scholars either reject this or regard it as unprovable. Kant claims that 7+5=12 is an unprovable synthetic statement. It is exciting and fulfilling in its own right without needing to make unprovable claims. It is also written formula 5 and represents anything unprovable. But even so, as a result, the most general charges were unprovable. Since elderly patients frequently had fluid in their lungs, it was an unprovable crime. In 2018, he contributed the song "Unprovable" to the compilation album "The Al Purdy Songbook".