Humans reading a text in Latin letters will find that d, b, p, and q are different letters. In most fonts, the only difference is rotation and/or mirroring. Y

Humans reading a text in Latin letters will find that d, b, p, and q are different letters. In most fonts, the only difference is rotation and/or mirroring. Yet they represent different sounds, they have different meanings. Rotation is another data point, not something entirely independent from the data.