[Pharo-project] Interval protocol

hi, i am alone with this problem (or just mentally ill?), why every time i use #start and #end protocol for Interval, e.g.: start := (1 to: 100) start. end := (1 to: 100) end. why i expecting that something called 'interval' should answer its start and end (or begin & end, if you like)? and i always hitting the wall with my head again and again.. because there's no such protocol and instead (after opening browser and looking at class, i figuring that i should use #first/#last, but it is completely unintuitive to me).. So, i am alone with this? Or maybe intervals deserving to have start and end? -- Best regards, Igor Stasenko.