By then, many had replaced Mach's phenomenalism with Otto Neurath's physicalism, and Rudolf Carnap had sought to replace verification with simply confirmation.
当时，许多人已经用奥图·纽拉特的物理主义取代了马赫的现象学；而鲁道夫·卡尔纳普也试图用简单的确认来替换验证。