It sounds to me like it has a lot in common with the noncentral fallacy. There’s a general tendency to think of groups in terms of their central members and not their noncentral ones. This both makes sneaking in connotations by noncentral labels possible, and makes “all central foos are bar” feel like the same thing as “all foos are bar”.
Even more so with the “No foo is a bar”. Those statements are most probably either very common definitions like “no mammal is a bird” and therefore not very informative, either they are improbable. Like “no man can live more than X minutes without oxygen, ever”.
In the last case, even if the X is huge, we can assume that maybe it can be done under some (unseen yet) circumstances.
In other words, don’t be too hasty with universal negations!
It sounds to me like it has a lot in common with the noncentral fallacy. There’s a general tendency to think of groups in terms of their central members and not their noncentral ones. This both makes sneaking in connotations by noncentral labels possible, and makes “all central foos are bar” feel like the same thing as “all foos are bar”.
Even more so with the “No foo is a bar”. Those statements are most probably either very common definitions like “no mammal is a bird” and therefore not very informative, either they are improbable. Like “no man can live more than X minutes without oxygen, ever”.
In the last case, even if the X is huge, we can assume that maybe it can be done under some (unseen yet) circumstances.
In other words, don’t be too hasty with universal negations!