Final answer:
The explanation not described in the textbook as part of the paradox of progress is that individuals become more easily bored now because technological advances have made modern life too easy.
Step-by-step explanation:
The question asks which of the explanations for the paradox of progress is NOT described in the textbook. Based on the provided information, the textbook does discuss the complexity and contradiction in modern life, referred to as being 'in over our heads'; it mentions the concept of 'affluenza' affecting our well-being; it addresses the challenges of constant connectivity to technology leading to a deficit in intimacy; and it mentions consumerism as a compensation for environmental stressors. However, the idea that individuals become more easily bored because technological advances have made modern life too easy is not mentioned as part of the explanations for the paradox of progress in the provided reference materials. Therefore, the explanation about individuals becoming more easily bored due to technological ease is NOT described in the textbook as part of the paradox of progress.