Lyric discussion by jaZZjaZZ54 

"Robert can you take me back?" might, I repeat "might" be a reference to the "Doctor Robert" who famously introduced the Beatles to LSD in 1965. Paul might be lamenting the additional knowledge that often comes with the use of LSD and the accompanying additional sense of responsibility experienced by conscientious users. The Lennon/McCartney song "Doctor Robert" penned a few years earlier was certainly more celebratory.

Dr. Robert was a real doctor, and definitely not a pseudonym for John Lennon.

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