Don't be fooled into thinking that when expected to deliver a five minute presentation that it will take less time to write than a ten minute presentation - it won't.
In fact, the harder assignment would be to expect a one minute presentation.
I always thought that it was Jonathan Swift who apologised to a recipient of one of his very long letters that he hadn't had time to write a shorter one. Did he? A Google search gives you Blaise Pascal
Je n'ai fait celle-ci plus longue que parce que je n'ai pas eu le loisir de la faire plus courte.