We didn't have mobile phones. There was only one phone in the house, and it was screwed to the wall. Besides, it belonged to Dad, and he didn't want us to use it. So when we wanted to talk to our friends, we got on our bikes, rode over to their parents' house, knocked on the door, and asked to speak with them.
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The mere fact that science may not yet adequately explain an object, event, or experience does not mean the immediate explanation should automatically default to a conspiratorial, extraterrestrial, paranormal, or supernatural cause.