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Wikipedia Cofounder Larry Sanger Banned From Site for ‘Canvassing’
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If you base something on facts, it will be left leaning. Right leaning has a higher value in loyalty, authority, respect, and spirituality. They will deny facts if they have to in order to prioritize their other values. Right leaning people tend to be more likely to be on time, have cleaner desks, and speak more formally to someone they deem a "superior". Left leaning often could give a rats ass about authority, and respect is only given once it's earned.
All that to say, facts and reality are more left leaning by nature. Given many religious folks will deny nature's history for their spiritual beliefs.