Many could not digest Moon landing, 9/11 or Osama bin Laden killing since they were too big an operation for them to understand and accept.
Many do not even accept existence of God as it is too big to understand.
If you don't know it doesn't mean it can't happen.
An ant is complete biologically and does many functions including making home and earn food will not understand what i am typing on a computer right now.
A common man has the same u/standing capacity ratio against big issues.