bleeding edge , n : (technology, idiomatic) Something too new and untested to be reliable or to have any assurance of safety; the figurative place where such things exist.
Cibo e viaggi / Food and travel notes by Livio Acerbo

bleeding edge , n : (technology, idiomatic) Something too new and untested to be reliable or to have any assurance of safety; the figurative place where such things exist.