This story at this point in the time line is a fun little story showing whats to come for the doctors future. Counting down the doctors is a fun little short story vibe, the bouncing between Tardis teams during the story is very well done. Each doctor is written perfectly as they get enough time to shine in this 20 min story, it doesn't feel rushed.

Overall this story is a fun little romp with the doctor doing a test and failing but the younger 1st doctor passes its kind of funny.