A: Usually, but not necessarily. You should always be putting two clips on the Rule card, but in some cases there are two halves of a Rule you could mark, and you only need to use the decoy spot if you’re only using one half of the qualities listed.

Here’s an example from the stand-alone non-pyramid version, which is out of print, but the pyramid rule version uses the same concepts, so let’s take a look and see what kinds of rules we could generate, using two clips.

5: A structure must contain at least one:
[yellow/blue/red] [decoy] [block/pyramid/wedge]

Using the top section and the decoy, we can get:
• A structure must contain at least one yellow.
• A structure must contain at least one blue.
• A structure must contain at least one red.

Using the decoy and the bottom section, we can get:
• A structure must contain at least one block.
• A structure must contain at least one pyramid.
• A structure must contain at least one wedge.

Using the top and bottom sections, with no decoy, we can get:
• A structure must contain at least one yellow block
• A structure must contain at least one yellow pyramid
• A structure must contain at least one yellow wedge
• A structure must contain at least one blue block
• A structure must contain at least one blue pyramid
• A structure must contain at least one blue wedge
• A structure must contain at least one red block
• A structure must contain at least one red pyramid
• A structure must contain at least one red wedge