Review for NeurIPS paper: H-Mem: Harnessing synaptic plasticity with Hebbian Memory Networks

The motivation of the model is unclear. In other words, why can this model work on the two tasks? We cannot simply say it uses Hebbian rule which agrees with biological system then it should work. A reason, or intuition, from the perspective of machine learning should be provided. I want to see explanations on both tasks in the rebuttal.