Dear all,

Thanks to everyone who tackled the Science Quiz about the only activity
you can't do in Space. Here is a short summary of the suggestions...

Weight-lift (2)
Skip rope (2)
Breathe (2) ,talk/live

I'll now (at considerable risk of being flamed) tell you what the
Science Museum answer was...


Before you start complaining, I will say that my own colleague, Fran
Sheehan, got it in an instant (that's a Stanford education for you!),
and denies having heard the riddle before.

I'm tempted to say that weight(inertia)-lifting is at least possible
during the acceleration phase! Swimming is conceivable, I think, if the
water could be contained. Skipping rope would, I admit, be difficult,
but could (I tentatively suggest) be contrived by the appropriate
apparatus - as applies to breathing and talking. However, to get tears
to run down the cheeks would be a tough exercise in physics.

So, perhaps another draw card for Mr. Tito's space tourism venture might
be it's, outwardly at least, anti-depressant effects!

Dr. Chris Kirtley MD PhD
Associate Professor
HomeCare Technologies for the 21st Century (Whitaker Foundation)
NIDRR Rehabilitation Engineering Research Center on TeleRehabilitation
Dept. of Biomedical Engineering, Pangborn 105B
Catholic University of America
620 Michigan Ave NE
Washington, DC 20064
Tel. 202-319-6247, fax 202-319-4287

Clinical Gait Analysis:
Send subscribe/unsubscribe to

To unsubscribe send SIGNOFF BIOMCH-L to
For information and archives: