Why old teachers should retire

In my high school, the average age of the teacher (I reckon) around 40 to 50. The main exception is my biology teacher (whose name I will not say), which is around the late 60's. I'm not trying to be a hypocrite as I value an education but somebody got to go to let new ideas flow in.

1. Sickness. It is a known fact that as people age, they will get sick more often, there is no way around that law. We all will die physically some day (as for spiritually, it is up to you to decide). An older teacher will have to take more days off due to sickness than a stout 40 years old teacher. No substitute can replace any real teacher so either 1. Take sick leave and let us watch an old video with almost no educational value or 2. Go teach and risk transferring the flu to all of us.

None of them sound so good...

2. Technology. If you were to choose between doing something by hand or using the computer do to it for you, which would you choose? If you choose the first one, what are you doing on the internet? Heck, what are you doing on a computer? Many old teacher are less competent than the students they teach in technology. Many can't exploit such stuff as RSS feeds, Youtube or even the full power of Google search functions. Technology is here to stay and we might as well take advantage of it.

Even an university offers a YouTube class

3. Improvements over time. The Third Law of Thermodynamics - The longer you do something, the more likely your going to do it again. Pertaining to number 2, many teachers have a set procedure every single year (*cough*Science Corners*cough*). It might not even be the best way to teach. Old teachers' students eventually will fall behind better methods of teaching. Also with all the colleges churning out new teaching graduates, someone got to have a radical new idea.

I'm still not going to say who the teacher is...