v. i. [ imp. & p. p. Theorized p. pr. & vb. n. Theorizing ] [ Cf. F. théoriser. ] To form a theory or theories; to form opinions solely by theory; to speculate. [ 1913 Webster ]
[纸上谈兵 / 紙上談兵, zhǐ shàng tán bīng, ㄓˇ ㄕㄤˋ ㄊㄢˊ ㄅㄧㄥ]lit. military tactics on paper (成语 saw); fig. theoretical discussion that is worse than useless in practice (cf. Zhao Kuo 趙括|赵括 leading an army of 400, 000 to annihilation at Changping in 260 BC); an armchair strategist; idle theorizing#40926[Add to Longdo]