The last lecture

Opposite to what I wrote the other day, I want to hear your opinion as to when we should have the last lecture and I have set up a doodle poll for this:

http://www.doodle.com/4d9mwuyusw4cduxz

The poll might close already on Sunday.

I will talk about tree reconciliations, a topic not covered in the course book, but the basic material is also quite accessible in a research paper in Bioinformatics.