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[Phys-L] Straining at a Gnat?

Science magazine (4/10/14) includes the following article:

*Flies Evade Looming Targets by Executing Rapid Visually Directed Banked Turns * <http://mailings1.gtxcel.com/portal/wts/ccmckdyey-36efqD3aiOwkfqixr78vdkKWwNpikJhsQ3m>**
/F. T. Muijres et al./


At first glance, this represents what the cynical public might easily regard as
"gilding the lily" (or in more ribald terms, "Polishing a t**d")

How else would a flight vehicle avoid a rapidly approaching obstacle?

Brian Whatcott Altus OK Indian Territory.