Some scientists believe these flips have caused a number of species extinctions on Earth.
He said the move to a single data repository had "caused a number of problems".
Not having a smartphone probably caused a number of ancient deaths.
Before now, Ebola had caused a number of small, vicious outbreaks in central and eastern Africa.
Humans have caused a number of prominent extinctions, starting before the last ice-age.
Failure to locate buried valleys has also caused a number of costly surprises.
Two years on, the guidance hasn't seen revolutionary change and has caused a number of problems in principle and practice.
"There may have been a weapons system failure which may have caused a number of civilian casualties".
But the resulting brief voltage dip caused a number of subway signals on the Upper West Side to malfunction, said Melissa Farley, a New York City Transit spokeswoman.
Again, with two strikers up front, Perth had added fluidity and Maclaren's pace caused a number of problems early on for Jets' back line.
At a town hall meeting this month, some foreign officers bitterly protested the policy, which caused a number of conservative commentators to call them cowards.
