femtobytes number

The definition for femto is available here.

femtobytes mean 10^-15 (0.000 000 000 000 001) bytes -- imho.

while such an entity is of no practical use these days - the idea in this blog is that "every single part of a byte/idea/detail do count". while increasing the size usually helps scalability - it does not solve most small issues nor understanding of them. the devil is in details.