Merge pull request #29 from CosmWasm/actor-model-rewording

Partially reword the actor model page

Author: aumetra

src/pages/core/architecture/actor-model.mdx

@@ -27,9 +27,13 @@ means a contract can only interact with the outside world via messages and only
 manipulate its own state.
 
 Picture two people living in two houses, each house has a mailbox. If person A
-wants to talk to person B, they write a letter and put it in person B's mailbox.
-Person B will read the letter and write a response, putting it in person A's
-mailbox.
+wants to talk to person B, they write a letter, address to to person B, and send
+it off. The mailman (or in this case, the chain) will put the letter in person
+B's mailbox.
+
+Person B will then read the letter and can choose to write a response, address
+it to person A with a note indicating that this is a reply, and send it off once
+again.
 
 No direct interaction is happening here, nobody visits each other's house which
 would allow them to rummage around in their belongings (state). They simply
@@ -50,8 +54,8 @@ be.
 
 But how does that fix reentrancy? In CosmWasm, you can only send out messages at
 the end of a contract execution as part of the response. This ensures you have
-already written everything to the state, meaning your state is in a consistent
-state.
+already written everything to the state, meaning the state can't suddenly change
+mid-execution and make your contract exhibit buggy behaviour.
 
 CosmWasm effectively forces you to follow the
 [CEI pattern (Checks, Effects, Interactions)](https://fravoll.github.io/solidity-patterns/checks_effects_interactions.html)