The Flash Season 5: 10 Easter Eggs & References You Might Have Missed In 'Nora'
6. Barry Allen, The Teacher
When The Flash, Kid Flash and XS came up with the tricky plan of phasing a moving plane through a building, Nora showed concern as she had never used her powers in that way before. However, her fears were put to rest when Barry gently talked her through it. As he did so, we saw flashbacks to the original Harrison Wells teaching a younger Barry the exact same thing.
Throughout The Flash's entire run, Barry has relied on guidance from the likes of Cisco, Caitlin and one of the many Harrison Wells to help him succeed. But the Season 5 premiere taught us that he no longer needed that guidance - also evidenced by the fact that it was he who helped Caitlin and Cisco figure out a solution to Gridlock's plan.
The Season 1 reference was the show's subtle way of symbolising a changing of the guard. By using Wells' words of wisdom, Barry successfully helped his daughter utilise her abilities, and this just highlighted that he is no longer the student; he is now the teacher.