Two senses of medium independence

The term “medium independence” has different meanings. One sense maps onto “abstract‐as‐abstracta” descriptions, while the other maps onto “abstract‐as‐omission” descriptions. Both senses have been deployed when it comes to understanding the nature of physical computation. However, because medium independence is a polysemic term, the sense being used should be clearly stated. If the sense is not clearly stated, then those who wish to engage in debates regarding medium independence and physical computation run the risk of conflating different but related issues, which can have consequences when it comes to thinking about physical computation across contexts.