diff --git a/docs/contracts.rst b/docs/contracts.rst
index 646e4cdcc..5bab6e78a 100644
--- a/docs/contracts.rst
+++ b/docs/contracts.rst
@@ -10,7 +10,8 @@ Contracts in Solidity are similar to classes in object-oriented languages. They
 contain persistent data in state variables and functions that can modify these
 variables. Calling a function on a different contract (instance) will perform
 an EVM function call and thus switch the context such that state variables are
-inaccessible.
+inaccessible. A contract and its functions need to be called for anything to happen.
+There is no "cron" concept in Ethereum to call a function at a particular event automatically.
 
 .. include:: contracts/creating-contracts.rst