In 2006, Roger Beck found all these approaches "lacked persuasiveness" because they were "ungrounded in proper contextual soil."
在2006年時，羅傑·貝克發現所有這些（研究）方法“缺乏說服力（lacked persuasiveness）”因為他們是“在正確的國家背景之中沒有事實的根據（ungrounded in proper contextual soil.）”。