A ⇔ ±B
Let U represent the univeral set. Let P represent the set containing people. Let H represent the set containing hearts.1. P ⊂ U, and H ⊂ U
2. H ∩ P ≠ {}
3. ∃ people without hearts
⇒ H' ∩ P ≠ {}
4. however, n(H' ∩ P) ≪ n(H ∩ P)
⇒ n(H' ∩ P) ≈ 0
5. n(H ∪ P) = n(P), since hearts cannot exist without bodies
⇒ H ⊆ P
⇒ H ≡ P, since n(H' ∩ P) ≈ 0
6. children have bigger hearts
⇒ (human size) ∝ 1/(heart size)
⇒ as heart size → 0, human size → ∞
yes maths is a perfect language and is an∫part of life.