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+## Don't use $ on the left side of assignments.
+
+### Problematic code:
+
+    $greeting="Hello World"
+
+### Correct code:
+
+    greeting="Hello World"
+
+Alternatively, if the goal was to assign to a variable whose name is in another variable (indirection), use `declare`:
+
+    name=foo
+    declare "$name=hello world"
+    echo "$foo"
+
+### Rationale:
+
+Unlike Perl or PHP, `$` is not used when assigning to a variable. 
+
+### Contraindications
+
+None
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