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First, we analyze the benefits and challenges of simulation-based evolution and subsequent deployment of controllers versus\u00a0evolution on real robotic hardware. Second, we discuss specific evolutionary computation issues that have plagued evolutionary robotics: (1)\u00a0the bootstrap problem, (2)\u00a0deception, and (3)\u00a0the role of genomic encoding and genotype-phenotype mapping in the evolution of controllers for complex tasks. Finally, we address the absence of standard research practices in the field. We also discuss promising avenues of research. 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