App crashing upon clicking button.

2015-06-23 20:09:27.901 funFacts[7626:725776] -[funFacts.ViewController showFact:]: unrecognized selector sent to instance 0x78f75560 2015-06-23 20:09:27.932 funFacts[7626:725776] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[funFacts.ViewController showFact:]: unrecognized selector sent to instance 0x78f75560' *** First throw call stack: ( 0 CoreFoundation 0x0028a746 exceptionPreprocess + 182 1 libobjc.A.dylib 0x01c8ba97 objc_exception_throw + 44 2 CoreFoundation 0x00292705 -[NSObject(NSObject) doesNotRecognizeSelector:] + 277 3 CoreFoundation 0x001d9287 ___forwarding_ + 1047 4 CoreFoundation 0x001d8e4e CF_forwarding_prep_0 + 14 5 libobjc.A.dylib 0x01ca17cd -[NSObject performSelector:withObject:withObject:] + 84 6 UIKit 0x00aafa90 -[UIApplication sendAction:to:from:forEvent:] + 99 7 UIKit 0x00aafa22 -[UIApplication sendAction:toTarget:fromSender:forEvent:] + 64 8 UIKit 0x00bf018a -[UIControl sendAction:to:forEvent:] + 69 9 UIKit 0x00bf05a7 -[UIControl _sendActionsForEvents:withEvent:] + 598 10 UIKit 0x00bef811 -[UIControl touchesEnded:withEvent:] + 660 11 UIKit 0x00b07cfa -[UIWindow _sendTouchesForEvent:] + 874 12 UIKit 0x00b087d6 -[UIWindow sendEvent:] + 792 13 UIKit 0x00ac66d1 -[UIApplication sendEvent:] + 242 14 UIKit 0x00ad6b08 _UIApplicationHandleEventFromQueueEvent + 21484 15 UIKit 0x00aaa337 _UIApplicationHandleEventQueue + 2300 16 CoreFoundation 0x001ac06f __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION_ + 15 17 CoreFoundation 0x001a1b7d __CFRunLoopDoSources0 + 253 18 CoreFoundation 0x001a10d8 __CFRunLoopRun + 952 19 CoreFoundation 0x001a0a5b CFRunLoopRunSpecific + 443 20 CoreFoundation 0x001a088b CFRunLoopRunInMode + 123 21 GraphicsServices 0x03f382c9 GSEventRunModal + 192 22 GraphicsServices 0x03f38106 GSEventRun + 104 23 UIKit 0x00aae106 UIApplicationMain + 1526 24 funFacts 0x00093174 main + 180 25 libdyld.dylib 0x0239cac9 start + 1 ) libc++abi.dylib: terminating with uncaught exception of type NSException (lldb)