I noticed the word complex appears twice in this sentence.
Using person-shaped glyphs (as opposed to abstract symbols like circles or squares)
has been shown not to produce additional empathic responses [55], but including actual
photographs of people helps readers gain interest in, remember[56, 57],
and communicate complex complex phenomena [58] using visualizations.
I noticed the word
complex
appears twice in this sentence.which I thought was a typo.