The Doctor reached into the inside pocket of his long Edwardian coat. With the matching vest and bow tie, he really did look like he may have come from another time.
The device in his hand, however, looked like it belonged to the future. Waiving the sonic in front of Abe it emitted a low pitched whirring noise. The Doctor flicked his wrist and then stared at the sonic to inspect the readings.
"Fascinating."
He was equal parts surprised and impressed that he still managed in Abe to see something that was new. The Doctor smiled despite himself.