Sabotage

Fiktor immediately thought of a nasty plan, when he found out that Ad was building a jet pack. Even though his absence would give Fiktor pleasure, he still sabotaged the jet pack. If only for the sight of his brothers feet up in the air…

After all, it was Fiktor who convinced Ad to try out the jet pack near the lake! Needless to say that this was the last time, the professor took his brother’s ‘advice’.

Why is Fiktor such a mean piece of work?