Embodiment

1-introduction/introduction/introduction.tex

@@ -92,7 +92,7 @@ It is technically and conceptually closely related to \VR, which replaces the \R
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 It describes the degree of \RV of the environment along an axis, with one end being the \RE and the other end being a pure \VE, \ie indistinguishable from the real world (such as \emph{The Matrix} movies).
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-Between these two extremes lies \MR, which comprises \AR and \VR as different levels of mixing real and virtual environments~\cite{skarbez2021revisiting}.
+Between these two extremes lies \MR, which comprises \AR and \VR as different levels of mixing real and virtual environments~\cite{skarbez2021revisiting}.\footnote{This is the original and classic definition of \MR, but there is still a debate on defining and characterize \AR and \MR experiences~\cite{speicher2019what,skarbez2021revisiting}.}
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 \AR/\VR is most often understood as addressing only the visual sense, and as haptics, it can take many forms as a user interface.
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