"The whole difficulty of detecting impairment would likely mean it'd be difficult to attribute deaths to impaired driving unless someone outright admitted to impairment".
Historic importance is difficult to attribute.
And when you're dealing with private companies it's much more difficult to attribute responsibility for potential damage.
Although these clearly reduce private spending power generally, it is difficult to attribute their incidence to specific persons and families.
The lack of models from India and other South Asian countries is difficult to attribute to any one factor.
Scientists still find it very difficult to attribute particular weather events, no matter how extreme, to climate change, as storms, floods, droughts and heatwaves occur naturally.
Social landlords reported rent arrears were up 16% since April 2013, although it was difficult to attribute this rise entirely to the bedroom tax.
Because of the number of variations on the basic design, it's difficult to attribute the modern coffee lid to a single inventor.
In many schools, students receive instruction from multiple teachers, or from after-school tutors, making it difficult to attribute learning gains to a specific instructor.
While it is hard not to notice individual works of genius, it is extremely difficult to attribute the invention of genres.
As in Vermont, the climate history of Africa's tropical belt also makes it incredibly difficult to attribute shifts in extreme weather to any one cause.
