diff --git a/Signals.md b/Signals.md
index 9882448..f7226cd 100644
--- a/Signals.md
+++ b/Signals.md
@@ -1,6 +1,6 @@
 Signals are messages sent to a computer from some external source and can be used for many purposes. They always have at least a name, and may have any number of (simple) parameters. Note that computers may also queue signals on themselves.
 
-Signals can be consumed using `[[computer.pullSignal()|API/Computer]]` or its preferred wrapper, `[[event.pull()|API/Event]]`.
+Signals can be consumed using [[computer.pullSignal()|API/Computer]] or its preferred wrapper, [[event.pull()|API/Event]]. The latter is preferred because unwanted signals and the requested signal itself are also distributed as events, which is used by a couple of system functions, such as primary component tracking.
 
 The following lists all signals triggered by components and the built-in libraries. They are listed in the following format: `name(arg: type, ...)`, meaning you would pull them like `local name, arg, ... = event.pull()`. For example, to pull a modem message:
 ```lua