Title: Необов'язково

Text: There are two ways in which science affects human affairs. The first is familiar to everyone: Directly, and to an even greater extent indirectly, science produces aids that have completely transformed human existence. The second way is educational in character - it works on the mind. Although it may appear less obvious to cursory examination, it is no less incisive than the first. Кожен абзац буде тестом.

Save test: Використовуйте це, якщо ви хочете поділитися цим тестом на друкування (тільки для автентифікованих користувачів).