Most of the time, detailed futuristic scenarios are not presented with the intent to say, "exactly this will happen." Rather, they are intended to say, "something like this will happen." Many people have trouble with purely abstract thinking, and benefit from the clarity of specific examples. If you make a general statement about the dangers of reckless scientific experiments (for example), it is likely that many of your listeners either won't be able to connect that to specifics, or will come up with examples in their minds that are ve... (read more)
Most of the time, detailed futuristic scenarios are not presented with the intent to say, "exactly this will happen." Rather, they are intended to say, "something like this will happen." Many people have trouble with purely abstract thinking, and benefit from the clarity of specific examples. If you make a general statement about the dangers of reckless scientific experiments (for example), it is likely that many of your listeners either won't be able to connect that to specifics, or will come up with examples in their minds that are ve... (read more)