right? when there are no slots it should look like , but...... we can make like a bugged plus reporter
if you right click on a slot and click "delete a slot" it will become , do it again and it's just .
now press the add input button and you should get . all of that happened because every single block with the option to add or delete more inputs have the "insert slot" and "delete slot" options. it worked on some blocks that has these options (Ex: the times block, every comparing block, and & or blocks)
Note when trying this out
This only occurs on blocks that starts with an "input name"
I don't get what this example is supposed to prove. The primitive IS_A_? isn't a hyperblock, not because of syntactic issues, but because putting a list in the first input slot is asking a question about the entire list, not about its items separately: