little stuff

Akuli · Akuli · commit ab67c5a0a23d · 2016-09-26T20:39:08.000+03:00
diff --git a/answers.md b/answers.md
@@ -197,7 +197,7 @@ These are answers for exercises in the chapters. In programming, there's always
 
 ## Defining functions
 
-1. Use `-value` to get tha negative in the abs function, and for loops
+1. Use `-value` to get the negative in the abs function, and for loops
     in the other two functions.
 
     ```py
diff --git a/installing-python.md b/installing-python.md
@@ -95,6 +95,10 @@ On GNU/Linux or Mac OSX, type `python3` instead:
     Type "help", "copyright", "credits" or "license" for more information.
     >>> 
 
+You may also have an older version of Python installed, but don't remove
+it. Your system may need it, so if you replace it with your own Python
+some things might stop working.
+
 Now type `exit()` and press Enter to get out of Python.
 
 ## Summary
