And even then I think it's not a case of will but could or, at most, likely - to which always the caveat needs adding "all else being equal".
The problem is that the media pester (or else, misquote out of context) a scientist into admitting that "in theory it's possible something could happen by such-and-such a date", then issue a headline saying he has stated it will happen by that date, when the reality is he thinks it's highly unlikely (just not impossible).
And when it doesn't happen, the public blame the scientist.
Something we also see, of course, with routine weather stories.