He also meets with six people to provide spiritual direction, a practice with roots in the Christian, Buddhist and Jewish traditions that now includes more than 5, 000 U.S. practitioners from a variety of faiths, up from 400 in 1990.

WSJ: Sometimes, a Second Career Requires a Leap of Faith

Mr Owen said the IPCC will argue at the hearing that until Acpo gives a direction to change the practice, it can do nothing.

BBC: Review of police lawyer shooting

Rob Portman made his own high-profile move in that direction earlier this month, becoming the only Senate Republican to embrace the practice.

WSJ: Tug-of-War Within GOP Over Gay Marriage

To move in the direction of becoming a classic, data scientists need to create a big community without diluting the practice.

FORBES: What Data Science Can Do To Become A Classic

And one possible step in that direction would be to state explicitly the range of inflation rates Fed officials will tolerate, a practice known as inflation-targeting.

NPR: Bernanke Vows to Continue Greenspan Policies