from typing import Any


def linear_search(lst: list, item: Any) -> bool:
    """Return a boolean representing whether or not the given item
    exists in the list.
    """
    # Iterate through all items in the list
    for i in lst:
        if item == i:  # If the target item is found
            return True

    # If we reach this point, the item is not in the list
    return False