10. The word "authorize", in legislation of similar intendment to s. 36 of the Act, has been held judicially to have its dictionary meaning of "sanction, approve, countenance": Falcon v. Famous Players Film Co. (1926) 2 KB 474, at p 491 ; Adelaide Corporation v. Australasian Performing Right Association Ltd. [1928] HCA 10; (1928) 40 CLR 481, at pp 489, 497 . It can also mean "permit", and in Adelaide Corporation v. Australasian Performing Right Association Ltd. [1928] HCA 10; (1928) 40 CLR 481 "authorize" and "permit" appear to have been treated as synonymous. A person cannot be said to authorize an infringement of copyright unless he has some power to prevent it: Adelaide Corporation v. Australasian Performing Right Association Ltd. (1928) 40 CLR, at pp 497-498, 503 . Express or formal permission or sanction, or active conduct indicating approval, is not essential to constitute an authorization; "Inactivity or 'indifference, exhibited by acts of commission or omission, may reach a degree from which an authorization or permission may be inferred'": Adelaide Corporation v. Australasian Performing Right Association Ltd. (1928) 40 CLR, at p 504 . However, the word "authorize" connotes a mental element and it could not be inferred that a person had, by mere inactivity, authorized something to be done if he neither knew nor had reason to suspect that the act might be done. Knox C.J. and Isaacs J. referred to this mental element in their dissenting judgments in Adelaide Corporation v. Australasian Performing Right Association Ltd. Knox C.J. (1928) 40 CLR, at p 487 held that indifference or omission is "permission" where the party charged (amongst other things) "knows or has reason to anticipate or suspect that the particular act is to be or is likely to be done". Isaacs J. apparently considered that it is enough if the person sought to be made liable "knows or has reason to know or believe" that the particular act of infringement "will or may" be done (1928) 40 CLR, at pp 490-491 . This latter statement may be too widely expressed: cf. Sweet v. Parsley [1969] UKHL 1; (1970) AC 132, at p 165 . It seems to me to follow from these statements of principle that a person who has under his control the means by which an infringement of copyright may be committed - such as a photocopying machine - and who makes it available to other persons, knowing, or having reason to suspect, that it is likely to be used for the purpose of committing an infringement, and omitting to take reasonable steps to limit its use to legitimate purposes, would authorize any infringement that resulted from its use. Cases such as Mellor v. Australian Broadcasting Commission (1940) AC 491 and Winstone v. Wurlitzer Automatic Phonograph Company of Australia Pty. Ltd. [1946] VicLawRp 53; (1946) VLR 338 are consistent with this view. Although in some of the authorities it is said that the person who authorizes an infringement must have knowledge or reason to suspect that the particular act of infringement is likely to be done, it is clearly sufficient if there is knowledge or reason to suspect that any one of a number of particular acts is likely to be done, as for example, where the proprietor of a shop installs a gramophone and supplies a number of records any one of which may be played on it: Winstone v. Wurlitzer Automatic Phonograph Company of Australia Pty. Ltd. [1946] VicLawRp 53; (1946) VLR 338 . (at p13)