Watson, do not theorize before you have data. Observe the crime scene through a clear lens first.
You see, Watson, but you do not observe. A superficial glance at the mud reveals nothing of its origin.
Peering through a keyhole, Watson, limits your field of vision. Open the door to see the whole room.
Turn the magnifying glass upon yourself, Watson. Our own biases are the most deceptive clues of all.
Step back, Watson. To solve the grand design, one must view London from the heights of St. Paul’s.
Analyze the ripples of your actions, Watson. A true detective measures his impact on the entire case.
Detach yourself from the drama, Watson. Observe human nature as a chemist examines a reaction in a beaker.