Räsänen draws a distinction between chronological age and biological age and argues that biological ageing is (sometimes) desirable. To demonstrate this, he asks us to consider the case of April, who like Karel Čapek’s Elina Makropulos, has stopped biologically ageing. Unlike Makropulos, though, April’s biological ageing was halted before puberty, so she will never mature into adulthood. Räsänen contends this case shows ageing can be desirable, but this equivocates between maturing and ageing. Here I argue biological ageing, or the wear (...) and tear normally associated with chronological ageing, isprima facieundesirable, but that maturing can beprima faciedesirable. (shrink)