But carefully conducted experiments show that some strategies work: intensive early childhood education modeled after the Abecedarian Project, rigorous schools like those in the KIPP network, volunteer reader tutoring like that done by Start Making a Reader Today, and subsidized jobs programs like Canada's Self-Sufficiency Project that build the employment habit.
They scoff even at seemingly rigorous practices like Mysore Ashtanga yoga and marathon training.
The elimination of complex job classifications irked union officials and members accustomed to a system in which workers with considerable seniority could be assigned less rigorous tasks, like janitorial work, and not be asked to perform other tasks.
Mr. Holland spent the next several years involved in both the first stirrings of fusion, via Davis, and the burgeoning avant-garde movement later known as the loft scene, with rigorous peers like the saxophonist-composer Anthony Braxton.
But, Mr. Novacek said, in addition to presenting intellectually rigorous subjects like "the genomic revolution" and Einstein's theory of relativity, "we also want to present ourselves as a place of fun, that's interesting to people of all ages".
Some proponents of rigorous standards, like Chester E. Finn Jr., a senior fellow at the Manhattan Institute, say that as appealing as Dr. Greene's approach may be, it simply does not work.
"In these times of economic distress, as family budgets are squeezed and financial aid resources are spread thin, rigorous courses like A.P. that prepare students for the demands of college and foster an increased likelihood of on-time graduation can be a very valuable resource for families," he said.
As the McFIS has the history of the scene we do not need a rigorous process (like Ding's AGOP and SCD algorithm) to determine scene change.
The CEO transitional jobs program reduced recidivism, an effect that is difficult to achieve and has rarely been seen in rigorous evaluations like this one.
She says the study shows researchers knew a lot less about beetle breathing than they'd thought, and it should challenge them to do more rigorous studies like this one.
