I've used the word "reasonable" in connection with the word "conjecture." As far as I'm concerned, "reasonable inference" and "reasonable conjecture" hold equal weight where objective reality is concerned. Neither of them attain to the level of "fact."
Then you're speaking a foreign language. Conjecture and inference are utterly different things. For example, consider the difference between conjecturing OJ might be a killer, and inferring he is a killer.
Wait, you weren't on that jury, were you?