: Modern memeology also studies how memes move from harmless jokes into serious political or social tools, sometimes creating "discursive communities" that share attitudes through insider references. Anatomy of an Internet Meme
: Beyond images, memes include melodies, catchphrases, fashion trends, and even architectural styles. Memeology
: Memes undergo a form of "natural selection." They must be catchy (fidelity), spread quickly (fecundity), and stay relevant (longevity) to survive. : Modern memeology also studies how memes move