Smith akaona nyika sechinhu chakabatana chose uye akakurudzira masisitimu akasanganiswa emiti nezvirimwa pasi. Iri bhuku rakafuridzira vanhu vazhinji kuti vaite chinangwa chekurima zvakanyanya, saToyohiko Kagawa uyo akapayona kurima kwemasango muJapan muma1930. Mubhuku raAustralia P. A. Yeomans ra1964, anotsigira dudziro yekurima kwekusingaperi, sezvo imwe inogona kutsigirwa nekusingaperi. Yeomans akaunza nzira yekucherechedza-yakavakirwa yekushandisa ivhu muAustralia muma1940 uye Maitiro ese eKeyline?
masisitimu akavhenganiswa emiti nezvirimwa zviri pasi