61.   So what if some old coaches have to learn some new tricks.

62.   So, can you really teach an old dog new tricks?

63.   So the two pillars of the industry are taking a deep breath and trying some new tricks.

64.   Still, the world may not be a safe place for teaching robot dogs new tricks.

65.   The artisans who are bringing new telescope mirrors into the world are learning new tricks nearly every day.

66.   The dweezils are always coming up with new tricks, though, so you need to update the list of known offenders frequently.

67.   The Grimes have been trying out a prototype system for several months, learning each new trick as the engineers increase its capability.

68.   The only way you can teach an old dog new tricks and the only way to get you out of it is hard work.

69.   The resulting extinctions provide the breathing space evolution needs to try out new tricks.

70.   The software that drives this puppy is astoundingly sophisticated, constantly topping itself by offering new tricks.