what counts as an atomic fragment

• what actually counts as atomic
• image recognition and ML work that redefines the image as a container of meaning as well as pixels
• https://imagesnippets.com/ a linked data/RDF example
• how data blocks are arbitrary, there is actually no singular atomic version because it can be atomic from different viewpoints, is the base just the word or the letter or the byte? different arrangements as per datatype and different even in the analogue world