Imagesource: https://youtu.be/4NsZES_rQ7U

Chris Rose approaches our favorite topic from the very, very bottom. 

If you know NandToTetris, the question of the video is crystal clear very quickly. How can we actually calculate everything that can be calculated, when our hardware only implements the most simple logical functions on the lowest level?

Rather less something for full professionals, who build their own digital designs. But interesting for every hobby computerista, who want to go a little deeper into the matter. 

In any case well done and entertaining and to be found on YouTube.