Warning! Spoilers ahead for Young Sheldon season 5.
One of Young Sheldon's oldest The Big Bang Theory plot holes has just been resolved by Young Sheldon season 5's penultimate episode. The CBS sitcom has been focused on Georgie's (Montana Jordan) predicament as a young expecting father with his situation impacting his family in various ways. That includes Sheldon (Iain Armitage) in a subtle but significant way.
Since The Big Bang Theory ended in 2019 after 12 seasons, Young Sheldon has been standing on its own as a CBS comedy. Instead of a straight-up sitcom like its parent series, however, it has slowly transformed into a family dramedy, with Young Sheldon's focus shifting onto the Coopers as a whole. Still, Sheldon remains an integral part of its storytelling as his future already fully played out in The Big Bang Theory for more than a decade. Considering that there are certain details that were revealed in The Big Bang Theory about his childhood, those events are now bound to happen in the prequel series.
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WithYoung Sheldon's lax approach to continuity, however, several plot holes in regard to the original show have been created throughout its run. Luckily, Young Sheldon season 5's penultimate episode finally explained why Sheldon (Jim Parsons) had an aversion to constant bickering and fighting around him in the original show. In The Big Bang Theory episode «The Guitarist Amplification,» Sheldon got upset at Penny (Kaley Cuoco) and Leonard (Johnny Galecki), who were arguing about her ex-boyfriend coming over and staying at her place. Sheldon recalled how his friends' arguments reminded him of George and Mary’s regular fights when he was still living
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