Joe Ganley

I make software and sometimes other things.


Due to Blogger's termination of support for FTP, this blog is no longer active.

It is possible that some links from here, particularly those within the site, are now broken. If you encounter one of those, your best bet is to go to the new front page and hunt for it from there.

Most, but not all, of the blog's posts are on this page; the archives are here.


A couple of summers ago we were in Costa Rica, and took a tour down the Tempisque River. To point out animals and such on the banks, rather than a flashlight or laser pointer, our guide used a small compact mirror to reflect the sun onto the spot where he wanted us to look. Cheap, easily obtained, no batteries, and no worries about getting wet - just the sort of low-tech solution that I love. I've since learned that this is a common trick used by soldiers as well.

BTW, our tour guides, Jose and Amy, were incredible. Highly recommended.

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