text: Yen ɛɛ kɔc kuony bennë nambaïtɔ nï mathjiëlɣic luɛlɣic ku wɛɛrkeɣic, ayïï tɔ nïï formulaïɣic yennë kɛk kuɛn nïï nambaï kɛn ku yennë thööŋic yecɔl factorials, kɔk aayïï tɔ nï modɛlkɔkɣic de këcɔl psychophysics, ku yen alë bennë lui ɣan yennë paakthin.