In the learning technologies explored here, much more attention is paid to the technology-based mediation of content than to the mediation of the relationship whether it be between the learner and the instructor or between learners themselves (cf. 4.2). In many cases the presence of an instructor is considered to be a necessity (cf. 4.4.6) but current methods use face-to-face presence rather than telepresence. Wide-scale extension of such systems - as Andreas Kisch of the MIGROS pointed out (cf. 3.2.4) - would be quite unfeasible with traditional means. Efforts have to be made to facilitate the introduction of forms of telepresence in learning technologies used in industry and administrations.