@BillHanage @factsarefact12 All true but also hard and maybe impossible to usefully estimate as long as poorly understood.
@BillHanage@factsarefact12都是真的，但也很难，而且可能不可能有效地估计，只要了解得很少。
@BillHanage @factsarefact12 All true but also hard and maybe impossible to usefully estimate as long as poorly understood.
@BillHanage@factsarefact12都是真的，但也很难，而且可能不可能有效地估计，只要了解得很少。