@steveroyle @brembs @sje
We need to remember that _Science_ is *not* a "traditional paper format". _Science_ is a "GlamourMag paper format".
In the old days (pre-1990s), one would write a Science paper as a teaser, but the *real* paper would be in society journal like _J Neurosci_ or _J Neurophys_. These journals had full methods sections, long results sections that worked through the logic, and no supplements.
The system changed when people started getting away with just doing the _Science_ or _Nature_ paper and getting jobs based on those papers (without the "real paper behind them"). To be honest, I don't know why it changed, but it definitely did in the 1990s.
I believe this is when people started using impact factor (which wasn't a thing until _Cell_ convinced journals to fight over it) and "journal value" to judge paper quality.
Shortly thereafter, the semi-glam magazines showed up to try to fill that gap of "high impact factor", but with "sufficiently long data". Which they did by shoving the methods and "supplemental results" into online-only hard-to-find material.
All of this has deeply hurt science.