So I push an 80 year old down a flight of stairs he dies cause he was old.
Then its not murder he was old his time was up.
It depends!
With the same stairs, you can try to push a kid, a teenager, and an adult. They felt nothing, well, perhaps their clothes got dirty. 99% of the time, the elderly also felt nothing serious.
its like someone with osteoporosis(weak bones) where any hard impact will cause death.
if someone threw them down the stairs. the death would be attributed to being thrown down the stairs.
and the person that threw them down the stairs would be investigated as a murderer
it wouldnt be 'death by natural causes'
True, it's a very unfortunate accident, and let's close the whole area because the stairs are dangerous.
Something new is killing people.
People were afraid to go to the doctor/hospital, didn't do their routine health check?