Carmack's tweet seems like more of a thought provoking question than an indictment of case sensitivity. I'm not sure I am convinced that a child stumbling over

Carmack's tweet seems like more of a thought provoking question than an indictment of case sensitivity. I'm not sure I am convinced that a child stumbling over case sensitivity is a smoking gun. I just explained it to my nontechnical partner and before I had finished and proposed a "what do you think?" kind of question, she had given a "oh,hmm" to the idea that "abc" and "ABC" might mean the same thing when used as variables. Again, no smoking gun here either.