Non of those things are SD they are weapons you can be as effective with a rolled up newspaper
Welcome to MartialTalk.
It's a shame that your first post has to be so... misguided...
Weapons absolutely are a part of self defense. To claim otherwise is just ridiculous.
Similarly, to claim you can be "just as effective with a rolled up newspaper" as you be with a real weapon is also pretty silly.
You're not seriously suggesting that a rolled up newspaper is as effective as the knife in my front pocket are you?
And then there's the Glock 19 that generally sits behind my right hip...
While I am a big fan of improvised weapons, and do believe that they can be used effectively, it's utter nonsense to claim that they're even close to being as effective as an actual weapon. Especially in the hands of someone who has spent significant time training in the use of that weapon.