However, other scholars concede de-classified Soviet archive data to be a reliable source.
At the same time, many scholars concede that the star system can work.
All scholars concede that Pepi II's reign was certainly unusually long.
Catholic scholars concede the wheat-only rule comes from tradition - just like many other rituals in Catholicism.
Most legal scholars concede that defense access to confidential data may be necessary in some cases, but say the court should define the guidelines.
However, scholars concede that such images have "a spiritual element", and were also sometimes used in informal religious devotions celebrating the day of the Mi'raj.
Some Muslim scholars involved in interfaith dialogue concede that their side is not always equally forthcoming.
Legal scholars concede that Finch has his ethical lapses.
But as serious scholars have long conceded, hard proof of the first 2,000 years is missing.
Even those scholars who find it difficult to justify concede that it is firmly entrenched.