And at the beginning of this discussion , did I make claims about biological sex , or gender ? <| sep |> What are the chances I could get 4 memberships and 4 tickets with no loyalty points . Wouldn ' t that be extremely low odds ? <| sep |> Yes they could make it so that you can change between sightings and nearby <| sep |> IDA doesn ' t write down any results of its searches , which is why it ' s so good at conserving memory . What this means is that you can end up with it searching the same paths over and over , unaware that it ' s doing anything wrong . No other algorithm does that . It ' s trivial to make it loop on this site , but like you said it ' s not working right so it ' s hard to say what ' s going wrong exactly . But no other algorithm produces that result , so that ' s something . It just doesn ' t make sense to use an algorithm that saves memory on the order of megabytes these days . It was designed in 1985 , when one megabyte cost several hundred dollars . Now it costs three tenths of a cent .