Might be worth a read, re state of play in NM engineering.

Neuromorphic computing finds new life in machine learning

Neuromorphic computing has had little practical success in building machines that can tackle standard tests such as logistic regression or image recognition. But work by prominent researchers is combining the best of machine learning with simulated networks of spiking neurons, bringing new hope for neuromorphic breakthroughs.

By Tiernan Ray | July 1, 2019 -- 02:45 GMT (12:45 AEST) | Topic: Artificial Intelligence

https://www.zdnet.com/article/neuromorphic-computing-finds-new-life-in-machine-learning/