Let us define $op ->_{proc} op'$ to hold whenever there exists a process p that issues both operations with `res[op]` happening before `inv[op']`.

**Def:** a complete history is sequentially consistent if there exists a sequential history $𝑆$ s.t.
![[Pasted image 20250324082534.png]]

![[Pasted image 20250324082545.png]]

The problem with sequential consistency is that it