Final answer:
Modern literacy, including books and the Internet, can enhance the usefulness of an elder's wisdom by providing access to a vast amount of information, sharing knowledge with a wider audience, and contributing to the preservation of wisdom.
Step-by-step explanation:
Modern literacy, including books and the Internet, can enhance the usefulness of an elder's wisdom. In today's world, the Internet provides access to a vast amount of information and knowledge that can supplement an elder's personal experiences and wisdom. Additionally, books and online resources allow elders to share their knowledge and insights with a wider audience, contributing to the preservation and transmission of wisdom across generations.