David Deutsch has some misconceptions about epistemology. I explained the issue on Twitter.
I've reproduced the important part below. Quotes are DD, regular text is me.
There's no such thing as 'acceptance' of a theory into the realm of science. Theories are conjectures and remain so. (Popper, Miller.)
We don't accept theories "into the realm of science", we tentatively accept them as fallible, conjectural, non-refuted solutions to problems (in contexts).
But there's no such thing as rejection either. Critical preference (Popper) refers to the state of a debate—often complex, inconsistent, and transient.
Some of them [theories] are preferred (for some purposes) because they seem to have survived criticism that their rivals haven't. That's not the same as having been accepted—even tentatively. I use quantum theory to understand the world, yet am sure it's false.
Tentatively accepting an idea (for a problem context) doesn't mean accepting it as true, so "sure it's false" doesn't contradict acceptance. Acceptance means deciding/evaluating it's non-refuted, rivals are refuted, and you will now act/believe/etc (pending reason to reconsider).
Acceptance deals with the decision point where you move past evaluating the theory, you reach a conclusion (for now, tentatively). you don't consider things forever, sometimes you make judgements and move on to thinking about other things. ofc it's fluid and we often revisit.
Acceptance is clearer word than preference for up-or-down, yes-or-no decisions. Preference often means believing X is better than Y, rather than judging X to have zero flaws (that you know of) & judging Y to be decisively flawed, no good at all (variant of Y could ofc still work)
Acceptance makes sense as a contrast against (tentative) rejection. Preference makes more sense if u think u have a bunch of ideas which u evaluate as having different degrees of goodness, & u prefer the one that currently has the highest score/support/justification/authority.
Update: DD responded, sorta:
You are blocked from following @DavidDeutschOxf and viewing @DavidDeutschOxf's Tweets.
Update: April 2019:
DD twitter blocked Alan, maybe for this blog post critical of LT:
DD twitter blocked Justin, maybe for this tweet critical of LT: