This is the whole point of "Last Thursdayism". You claim that the world was created, as it is, last Thursday. All of history, including your own memories, were fabricated at the moment of creation - which was just last Thursday. Then you challenge them to try to prove you wrong.
It's a great demonstration of why we long ago established the concept of the burden of proof
My fear of heights kind of makes sense -- heights make me lightheaded, even woozy. If I were to suddenly faint I might fall to my death. Having that thought when I'm near a high ledge makes me lightheaded, even woozy