Take a moment to close your eyes and imagine a little girl sitting on the furthest bench in the darkest corner, with her knees tucked under her chin and her eyes glazed with a faraway gaze, looking but not seeing her classmates running around, playing, and shrieking during recess time.
Have you learned a word or concept or seen an item and then suddenly see it everywhere? You’re left with a sense of confusion as to why that thing is so much more common now. That concept right there is the Baader-Meinhof phenomenon. Like deja vu where you’ve seen something before but don’t know from what, the Baader-Meinhof phenomenon also experiences that but focuses more on how much more frequently you see that recurring thing.