Although they were rather arbitrarily defined in ancient times, today we recognize 88 official constellations, and their boundaries are carefully delineated on the sky.
From now on, our security interests will dictate the length and scope of military operations, not arbitrary benchmarks and timetables set up by politicians.
It said that “quarantines imposed during this epidemic have frequently not met these standards… and have been applied arbitrarily and been overly broad in implementation.”
Excluding such fossils from the scientific literature simply because they are privately owned " seems arbitrary" , wrote Dr Rauhut in a paper on the topic.