be ahead of (someone's or something's) time
To be more innovative than can be properly appreciated during the time that someone or something is producing such innovation. He was really ahead of his time with this music—critics in the 1970s just couldn't see it. That show was really ahead of its time tackling issues like that. That 19th-century scientist was definitely ahead of his time with his detailed plan of space travel.
be in advance of (someone's or something's) time
To be more innovative than can be properly appreciated during the time that someone or something is producing such innovation. He was really in advance of his time with this music—critics in the 1970s just couldn't see it. That show was really in advance of its time tackling issues like that. That 19th-century scientist was definitely in advance of his time with his detailed plan of space travel.
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