I completely agree. I lost my HP 48 during a move and still mourn it. I bought an HP 41C on eBay to comfort me, because I yearned for the 41 I saw advertised in Scientific American as I was growing up. I loved writing programs in <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;RPL_(programming_language)" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;RPL_(programming_language)</a>, a Lispy dialect of Forth.