What's your weakness???? Forum

People in science often brag about their magnificent papers. Of course, if you have published some nice papers, why not be proud?
Indeed nothing wrong with that.

Though, Ralph Waldo Emerson (American Poet, Lecturer and Essayist, 1803-1882) once said: “Our strength grows out of our weaknesses”.
And I guess it’s important to be aware of your weaknesses. Although love for cookies, chick flicks and naivity can also be considered as weaknesses, I’d like to focus this Group on scientific weaknesses.

So tell us: what’s your worst paper that has been published, and why? Also, when did you deliver that horrid oral presentation?
And what did it teach you?

Have fun!!