I dont flick my knives like an idiot teenager would, i just use them as they were designed. To cut. Its the media, hollywood and the idiots that flicky flicky that ruin it for us.
I think a person should know how to open their folder as fast and securely as possible for those situations where they might need it open that fast.
However, it's really amazing. Hollywood in general, and James Dean in particular, gave us the Switchblade and Gravity Knife legislation in 1957-58. Again, regardless of what MF thinks, bedwetter douchebags, terrified of people with pocketknives with a spring and a button, gave congress the impetus to "control" these types of knives. Fact not opinion, fact not fiction.
Now, if you want to take a look at real rocket science...watch "Big Trouble in Little China" which features Jeff Imada with a Balisong and a Telescoping Baton...in not such a great light...yet, Imada laments the fact that Balisongs get controlled but he accepted the check! He signed the check! He cashed the check! Daniel Inosanto, a national treasure, watch "Sharky's Machine." Same-same, using Jeff Imada's Telescoping Baton...which ASP kinda-sorta ripped off...and a Balisong...cuttin' old Burt Reynold's fangers off during the Beni Hana audition in the movie...
These two movies put the Balisong, Butterfly Knife, out in the spotlight.
And, yeah, a lot of kids were doing stupid stuff with them.
A lot of kids do stupid stuff with a lot of things. iPods, iPhones, regular cellphones, automobiles...we start banning things because people do stupid stuff with them and we'll have toilet paper left and possibly plastic straws and I'm not too sure of the former.