Scientists say or at least they predict that in the future subway will pass through tunnels with air pumped out. They won’t be a vacuum inside these tunnels but virtually they will be no breathable air inside. What if the train window of some subway train cracks? Defects can always occur. It will be like in the horror movies if such thing happens. It is too much control of the environment and sending people into empty tunnel with only a thin train wall separating people from their doom. This wall is too thin for me. I will never use this new subway.
image via Wikipedia
image via Wikipedia
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