What a spectacular mosaic! I marvel at the artistry and craftsmanship.
Mosaics are like ancient, pre-digital, physical pixels.
This is a lost art, in the sense that no one has the time to create these anymore. Artists use pre-fabbed tessarae which never create the ancient handcrafted mosaic appearance.
When Time Team was in production, any Roman dig would elicit cries of where's the mosaics? (slight exaggeration) Centuries of the plough tended to have knocked such floors into their component tessarae.