css28 wrote: ↑
Fri Oct 04, 2019 11:13 am
@powersurge, please explain this Reality thing that you're talking about.
So the averages are constituted differently from the past--how does that make them less real?
Well, what I am referring to is that an average for a group does not always represent any "useful" information about that group.
For example you can get an average yearly income of a group of 200 people, of $50,000. This would be where 100 people make $40,000 and 100 people make $60,000. HOWEVER, you can also get a group of 200 people where 100 people make only $10,000 and the other 100 people make $90,000. The "average" is still $50,000, but the group is highly different, and none have an income of $50,000.
When it comes to the vehicle averages over the years.... Years ago, people drove cars that got gas mileage that were relatively closer to the other cars on the road. Today, we have people who drive high mileage cars, while many are willing to drive huge truck-cars (which are highly wasteful of gas). So that graph may show a slow increase in gas mileage over time but not accurately reflect the "average" number.