Modulation is like tuning your guitar so the song can travel far—it changes your signal to ride on a wave it couldn’t before. Digital communication then turns that song into a code of ons and offs, like the precise tabs I write for my students. But from my old laptop that buffers, I know a clear signal depends more on the hills and the weather than perfect theory. It’s why my parents’ phone cuts out, *thikai cha*, even when the idea is simple.
#travel
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