One example is, a visual /ga/ combined with a listened to /ba/ is usually read as /da/. The influence is robust, persisting even with expertise in the illusion, not like particular optical illusions that may stop working after 1 'sees as a result of' them. The picture is obvious https://mediasocially.com/story4681917/not-known-factual-statements-about-illusion-of-kundun-mu-online