The set of spectrum maps [Σ^∞ X, Σ^∞ Y] may seem totally out of reach. But if you just work hard and take one more suspension each day, [Σ^n X, Σ^n Y] will gradually grow into the answer.
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RT @ayegill
@chmonke @csaez_math @sarah_zrf Suspension grindset
https://twitter.com/AyeGill/status/1468268667511185425