The reason for not trusting algorithms is that most of them have unexpected failure modes, and then no way to dispute their result through a more holistic (eg,

The reason for not trusting algorithms is that most of them have unexpected failure modes, and then no way to dispute their result through a more holistic (eg, human based) method. Human grading has relatively well understood failure modes and a (semi-)functional dispute system. The danger is that too often when we switch to algorithms, we "forget" (read: often choose not to implement) dispute mechanisms. Im not against algorithmic grading, per se, but I expect that we're at the phase (and will be for some time) where a human and a computer do a better job together than either does alone.