| 41. | Radio controls are fair, neither commendable nor really inconvenient.
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| 42. | Because of the rough landscape it was nearly impossible for anyone to gain radio control.
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| 43. | Radio control has been around since Nikola Tesla demonstrated a remote control boat in 1898.
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| 44. | But the radio controls are much more user friendly.
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| 45. | There's also a primer on batteries and radio control.
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| 46. | It can shut off the air conditioners by radio control for 13 minutes every half-hour.
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| 47. | The tons of stone all around made radio controls impracticable, according to iRobot's Gregg Landry.
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| 48. | Reliable radio control uses bands dedicated to the purpose.
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| 49. | We'll have radio control implanted in our heads instead.
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| 50. | With the exception of some of the radio controls, nothing requires your eye for operation.
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