In her target article, Michaels defines action as “a temporally bounded, observable, goaldirected movement (or non-movement) that entails intention, the detection of information, and a lawful relation between that information and the movement”. She defines perception as “the detection of information”. This forces one to conclude that it is impossible to study action separately from perception. ...

We give effective upper bounds for the number of purely inseparable points on non isotrivial curves over function fields positive characteristic and transcendence degree one. These depend genus curve, field bad reduction curve.