To an extent, I agree: Hegel is subject to the normal waxing and waning of intellectual trends. On the other hand, I think really seismic shifts in faculty are

To an extent, I agree: Hegel is subject to the normal waxing and waning of intellectual trends. On the other hand, I think really seismic shifts in faculty are generally driven by outside pressure - and the largest source of pressure, historically, has been political witch-hunting, closely followed by marketization.