A simple, popular narrative of scientific progress treats the history of science as a steady accumulation of facts, each new correct idea simply replacing an earlier, incorrect one as soon as sufficient evidence became available. Historians of science generally find this narrative considerably too tidy: studying why a given scientific idea actually gained acceptance when it did usually requires looking well beyond the evidence itself, since new evidence alone rarely fully explains an idea's specific timing without also accounting for the surrounding intellectual assumptions and institutional structures that shaped whether that evidence could actually be heard and accepted.
The same evidence doesn't automatically produce the same acceptance everywhere or at any time
An idea's supporting evidence can exist, sometimes for a considerable stretch of time, without that idea actually gaining wide scientific or public acceptance, precisely because acceptance depends on more than the evidence's own existence or quality. Prevailing intellectual assumptions about what kind of explanation even counts as a legitimate one, and institutional structures, universities, professional societies, religious or state authorities, that control which ideas get taught, funded and publicly defended, all directly shape whether a given piece of evidence actually succeeds in shifting broader scientific or public opinion, regardless of that evidence's own intrinsic quality.
Historians of science study this surrounding context, not just the evidence itself
Because acceptance depends on more than evidence alone, historians of science routinely study the specific intellectual and institutional context surrounding a given scientific idea's rise, which existing authorities and assumptions it directly challenged, which specific institutions eventually took it up and lent it their own authority, and how the idea's own presentation evolved as it moved toward broader acceptance. This approach treats the history of science not simply as a record of who discovered what and when, but as a genuinely richer, more complicated history of how specific explanations came to be considered legitimate and worth taking seriously within their own particular intellectual and institutional moment.
What we're still unsure about
That scientific idea acceptance depends on considerably more than evidence alone, and that historians of science study the surrounding intellectual and institutional context specifically to explain a given idea's actual historical timing, are well established, extensively developed approaches within the history and philosophy of science. What remains more genuinely a matter of ongoing scholarly debate is exactly how much weight to assign social and institutional factors relative to the evidence's own genuine scientific merit when explaining a specific historical case, since historians of science continue to actively disagree about where that balance lies for particular episodes, rather than there being one single, universally agreed formula for weighing evidence against context in every case.
This sits inside The History of Science & Ideas, one of seven topics in Cultural History, one of seven domains in History, one of seventeen subjects the app can quiz you on.