The explanation focuses on the symbolism of age progression in Shakespeare's monologue 'All the world's a stage' and the physical attributes associated with aging highlighted in the text.
'The sixth age shifts into the lean and slipper'd pantaloon,' in Shakespeare's 'All the world's a stage' monologue, symbolizes the stage of old age and decline where the man becomes frail and feeble. The pouches on his side signify that he might need to carry items due to decreased mobility or memory loss in old age. The 'hose' being called youthful reflects a time when the man's legs were strong and full of vigor. Shrunk shank implies his legs have lost muscle mass and strength as he aged. His manly voice turning childish signifies the regression of his vocal abilities and strength as he grows older.
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