The phrase "simultaneously true" is grammatically correct and can be used in written English.
It means that two statements or ideas are both valid and correct at the same time. Here is an example: "The scientist's theory about the origin of the universe was simultaneously true and groundbreaking, as it was supported by both evidence and mathematical equations."
How these two judgments can be simultaneously true is one of this book's central questions.
How can it be simultaneously true that Cambodia and Bangladesh were strategically marginal and that the outcome of the cold war depended on their destruction?
It can be simultaneously true that hedge funds have gotten themselves into a bad trade and that JPMorgan is doing something more than hedging.
Needless to say, it is biologically implausible that these results are simultaneously true: how can regular cellphone use protect against cancer while frequent phone use increases risk?
Though there can be little doubt that as a candidate Mr. Obama faced voters' conscious and unconscious prejudices, it is simultaneously true that unconscious colorism subtly advantaged him over darker-skinned politicians.
One of the difficulties in literary criticism is rhetorical: in order to fully lay out your ideas, you often have to claim that they are satisfying explanations in themselves, when you know that they represent just one of many equal, and perhaps simultaneously true, alternatives.
In this situation C1′ has received the information that the sentence simultaneously is true only (i.e., true and not false) as well as both true and false, in other words, it has a value not from 4, but from P(4), namely the value TB = {{T}, {T, B}}.
The transcendent act that follows, worthy of a member of an Arctic expedition and simultaneously a true work of art, takes the life of this courageous housemaid beyond her employers' whims and toward real fulfillment.
Lions to win Jay Gruden gave Kirk Cousins a vote of confidence this week, insisting that the Washington quarterback "gives us the best chance to win" – which might simultaneously be true but also not an especially ringing endorsement when Colt McCoy is the alternative.
To explore how both these features can simultaneously be true, we introduce an "egg-box" model.
He held that actually necessary truth depends on God's unconstrained will, such that even propositions that are logically contradictory might simultaneously be true.
