\section{Experiments \& Results}
\begin{itemize}
    \item Diminishing returns: each click has less impact than previous.
    \item The ``Turk philosophy'' is \emph{not} efficient for video.
    \item Trade-off between CPU cost vs. human cost for max. accuracy.
    \item A visual based tracker \emph{can} benefit video annotation.
    \item Interactive vision: with modest human effort, we \emph{can} deploy algorithms that quantify progress in difficult scenarios.
\end{itemize}

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