>Shovelling nanoseconds by manually inlining everything is not scalable.
Neither is Internet speed (even near to) infinitely scalable (even forgetting cost), despite the dreams or hype of some.
Not to mention people on slower lines, as others have said.
Multiply those multi-MB (for pico-content) sites by gazillions of people accessing (some of) them, and the slowdown of the Net becomes serious real fast - no matter what the gung-ho types might claim or say.
Neither is Internet speed (even near to) infinitely scalable (even forgetting cost), despite the dreams or hype of some.
Not to mention people on slower lines, as others have said.
Multiply those multi-MB (for pico-content) sites by gazillions of people accessing (some of) them, and the slowdown of the Net becomes serious real fast - no matter what the gung-ho types might claim or say.