Thinking about EVALUATION
    TEST-FUNCTION-NAME-IS-FIRST-ARGUMENT has expanded your awareness.
    TEST-EVALUATION-ORDER has expanded your awareness.
    TEST-QUOTING-BEHAVIOR has expanded your awareness.
Use (list '+ 1 2) to correct a cheat.
Thinking about ATOMS-VS-LISTS

TEST-LIST-OR-ATOM has expanded your awareness.
TEST-EMPTY-LIST-IS-BOTH-LIST-AND-ATOM has expanded your awareness.
TEST-KEYWORDS has expanded your awareness.
Thinking about SPECIAL-FORMS

TEST-SETF has expanded your awareness.
TEST-LET has expanded your awareness.
TEST-LET-DEFAULT-VALUE has expanded your awareness.
TEST-LET-BINDINGS-ARE-PARALLEL has expanded your awareness.
TEST-LET*-BINDINGS-ARE-SERIES has expanded your awareness.
WRITE-YOUR-OWN-LET-STATEMENT has expanded your awareness.
TEST-COND has expanded your awareness.
TEST-YOUR-OWN-COND-STATEMENT has expanded your awareness.