Had we only held user research sessions in English, and translated content from English to Welsh, we would have missed out on this information.
Petaen ni wedi cynnal sesiynau ymchwil defnyddwyr yn Saesneg yn unig, a chyfieithu cynnwys o’r Saesneg i’r Gymraeg, fe fydden ni wedi colli’r wybodaeth hon.