ðˈɛn kˈiːp ˌɔn ˈædɪŋ mˈoːɹ ænd mˈoːɹ nˈuː vˈɛɹɪəbəlz pˈɑːsᵻbli ɐn ˈɪnfɪnət nˈʌmbɚ tə kˈɪl ˈɔf ˈɔːl həmˈɑːlədʒi ʌv pˈɑːzᵻtˌɪv dᵻɡɹˈiː.
Then keep on adding more and more new variables (possibly an infinite number) to kill off all homology of positive degree.