If you feel an ache, you exist. On Wed, Sep 26, 2012 at 10:03 AM, Kim <kimharch@cut.net> wrote:

I had my first good laugh at my desk in a long time. And no one around to hear it. (So did I make any sound - or more to the point, do I exist?)

-----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Daniel Holmes Sent: Wednesday, September 26, 2012 9:32 AM To: Utah-astronomy Astronomy Subject: [Utah-astronomy] XKCD: What if?

I've posted a few XKCD comics here over the past while. He started a new feature a few months ago. Every Tuesday called 'What if?' he answers questions with science facts and math.

This week's: What if everyone on earth pointed a laser at the Moon? Would it be visible?

Interesting answer: http://what-if.xkcd.com/13/

Read the back catalogue too--my favorites are http://what-if.xkcd.com/8/and http://what-if.xkcd.com/1/

Dan -- Daniel Holmes, danielh@holmesonics.com "Laugh while you can, monkey boy!" -- Lord John Whorfin

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"You're magnetic ink." - The Moody Blues On Wed, Sep 26, 2012 at 10:03 AM, Kim <kimharch@cut.net> wrote:

- or more to the point, do I exist?