Assimilation - Irregular Regularity?

There's various things that can assimilate and you mentioned specifically voicing and aspiration and the point of articulation. Place in manner. And Bianca also made the same list. So when we talk about assimilation, it can go either direction. You can have progressive, which means a following segment is changed,. Like the English plural. The place can assimilate where your n turns into an m before any myelabial. It's... probably the classy example in English is nasal assimilation.