"Questions on Doctrine" has proven to be divisive for many Adventists in the latter half of the twentieth century. Church historian George R. Knight has written that "Official Adventism may have gained recognition as being Christian from the evangelical world, but in the process a breach had been opened which has not healed in the last 50 years and may never heal." Conservative Herbert Douglass agreed, "most, if not all, of the so-called 'dissident' or 'independent' groups of the last 45 years are direct results of the explicit and implicit positions espoused by ["Questions on Doctrine"] on the atonement and the Incarnation."