Skeuomorphism is a design concept that incorporates elements from the past into modern objects, often for the purpose of familiarity or aesthetic appeal. It refers to the use of decorative or functional details that mimic the appearance of older, traditional materials or techniques, even though they may no longer serve a practical purpose. This can be seen in various forms, such as the use of faux wood grain on plastic furniture or the digital representation of a physical bookshelf on a virtual bookshelf. Skeuomorphism can evoke a sense of nostalgia and comfort, but it can also be criticized for being outdated or unnecessary.