Because that bit of information has gone through a chemical process called long-term potentiation (LTP) that strengthens the synapses.
In describing Anturane, Ciba-Geigy Pharmaceuticals said only: "Its pharmacologic activity is limited almost exclusively to the potentiation of the urinary excretion of uric acid.
This phenomenon, known as long-term potentiation, is believed to be the essence of one type of memory formation.