High-efficiency toilets use 1.28 gallons of water per flush – compared with up to 5 gallons for a regular toilet — but people have sometimes complained that those toilets require more frequent cleaning and that they need to flush two or three times to complete the job, casting doubts on how much water these models ultimately save.
In addition information was extracted by only three researchers who were in agreement to complete the questionnaires, raising doubts about the consistency of the study and whether the results can be extrapolated to other external auditors.
Their freedom to complete the job remains in doubt.
To disprove it, the researchers would have to show that the tortoises that watched Wilhelmina didn't simply have more environmental clues telling them how to complete the task, something Templeton doubts.
Experts encourage families who are interested in receiving financial aid for college to complete the Fafsa, even if they doubt they will qualify.
The results suggested that people believe NASA will complete the mission successfully but have doubts as to whether NASA will be honest when communicating with the public.
He said the group had failed to complete the appropriate paperwork and that doubts remained over its outpatient care.
And it represented a vindication of sorts for Pathe's chairman, Giancarlo Parretti, the Italian investor, whose ability to raise the money to complete the transaction had been widely doubted in the entertainment industry.
But he said the fact that "there are so many mistakes," and that it takes an average of nine years to complete the review process, "raises grave doubts whether we do catch all the mistakes".
Now the army is in its barracks, and although Philippine politics remain rambunctious, few doubt that Mr Aquino will complete the final two years of his term.
As for sleeping arrangements, there are barns, garages and people's floors, on which I lie exhausted, awake and wracked with doubt that I can complete the walk.
