kangaeru: think kangaesaseru: make somebody think: (in this case)The technology make us think many things. kangaesasesareru: the passive form of kangaesaseru: somebody is made think by (strange English, but it's difficult to translate literally into English) (in this case) We are forced to think many things by the technology. The meaning is almost same as kangaesaseru, but the subject changed. Subject became 'we', but we didn't think voluntarily. Something else(in this case the technology) made us think. This is a typical Japanese way of expression trying to avoid an impression that I have a 'will'.

saseru(使役) menas make (somebody do something) or let a person do something. rareru(受身) means passive to do something.　 so 考えさせられる is make us have to consider . 正しいかどうか分からないけど、参考してください。