CR – definition: a place where one convinces him/herself of convincing others.
But anyways I try again. Yes it’s quite permitted to get one. To use a (excuse me) toilet. To use modern day sanitary device. In fact to use any modern day device to better one’s health, sanitary standards. It’s permitted, advisable and recommended. But to say that one who does NOT own a detector is putting himself in a sakana – that’s perhaps maybe going a bit too much, no? How did it all of a sudden become a matzav of sakana? ?? ???? ??? ??? ????? ???? ???? one must erect a fence at the edge of his roof to protect oneself from falling. That is a ???? ????. Torah did not decide that a house in itself be a ???? ???? (and those time fires were much more dangerous, more common, as they used it for light, heating and cooking).
Incidentally, does anyone here know R. Moshe’s shitta regarding a checkup?
Again – As I wrote, one should do regular Hishtadlus, but be very wary of this “never again” attitude. Ever hear of the time seat belts actually CAUSED someone’s demise? ??????? ???? ???? ?? ??? ?????. Every creature of HaShem’s creations bends to do His bidding. There’s no outsmarting Him. No outdoing Him with all our modern, updated, upgraded gadgets notwithstanding. “The King’s Will Shall Be Done”. We’re commanded to protect our-self in the normal fashion, make regular ???????, and then humbly place one’s trust in HaShem.