These difficult questions arise because fairness and justice sometimes conflict.
The problem's arisen because surface water hasn't been able to drain away.
The disparity arose because 11 of the 15 women qualified for more than one event.
Order only arose and survived, anywhere, because enough people desired it.
This two-way interaction arises because the energy gap in either direction is similar.
The temptation may arise because a national championship lands on their doorstep.
Other engineers have argued that the fight arose because the two sides used widely different assumptions for calculating costs.
This difference in dates is said to have arisen because centuries ago 'days' began at sunset and night-time was considered part of the following day.
For lawmakers, problems arise because definitions that seem clear -live versus recorded - turn out to be ever more slippery in practice.
The problems faced when using the rational model arise in practice because social and environmental values can be difficult to quantify and forge consensus around.