When conditions change significantly, the entity composed of building blocks has an edge over the monolith.

A monolith can be highly efficient and well-fit for a given context.

But if a given context changes, the monolith might now no longer be viable, and will be hard to evolve to a point of viability.

But a system that is constructed of modular building blocks can reconfigure itself more easily.

Some building blocks will be used in new ways.

Some building blocks might not be vestigial and wither away… but won't bring down the rest of the system.

Modular things can be duct-taped together into new and novel combinations more easily, which means they are more likely to be viable in whatever context is thrown at them.

LLMs are like magical duct tape.

Modular systems seem to have an edge in this new world.

If you know the world will change but you don't know precisely how, modularize.