that is serious". He developed his notion of hamartia, or tragic flaw, an error in judgment by the main character or protagonist, which provides the basis for the "conflict-driven" play. Neo-classical theory The Italian Renaissance brought about a stricter interpretation of Aristotle, as this long-lost work came to light in the late 15th century. The neoclassical ideal, which was to reach its apogee in France during the 17th century, dwelled upon the unities, of action, place, and time. This meant that the playwright had to construct the play so that its "virtual" time would not exceed 24 hours, that it would be restricted to a single setting, and that there would be no subplots. Other terms, such as verisimilitude and decorum, circumscribed the subject matter significantly. For example, verisimilitude limits of the unities. Decorum fitted proper protocols for behavior and language on stage. In France, contained too many events and actions, thus, violating the 24-hour restriction of the unity of time. Neoclassicism never had as much traction in England, and Shakespeare's plays are directly opposed to these models, while in Italy, improvised and bawdy commedia dell'arte and opera were more popular forms. In England, after the Interregnum, and restoration of the monarchy in 1660, there was a move toward neoclassical dramaturgy. One structural unit that is still useful to playwrights today is the "French scene", which is a scene in a play where the beginning and end are marked by a change in the makeup of the group of characters onstage rather than by the lights going up or down or the set being changed. Well-made play Popularized in the nineteenth century by the French playwrights Eugène Scribe and Victorien Sardou, and perhaps the most schematic of all formats, the "well-made play" relies on a series of coincidences (for better or worse) that determined the action. This plot driven format is often reliant on a prop device, such as a glass of water, or letter that reveals some secret information. In most cases, the character receiving the secret information misinterprets its contents, thus setting off a chain of events. Well-made plays are thus motivated by various plot devices which lead to "discoveries" and "reversals of action," rather than being character motivated. Henrik Ibsen's A Doll's House is an example of a well-made structure (built around the discovery of Krogstad's letter) that began to integrate a more realistic approach to character.