We have a world horizon as a horizon of possible thing experience Dingerfahrung Things: that is, stones, animals, plants, even human beings and human products; but everything here is subjective and relative, even though normally, in our experience and in the social group united with us in the community of life, we arrive at secure facts; within a certain range this occurs of its own accord, that is, undisturbed by any noticeable disagreement; sometimes, on the other hand, when it First let us recall that what we call science is, within the constantly valid world, as life world, a particular type of purposeful activities and purposeful accomplishments like all human vocations in the usual sense of the word; to this sphere also belong those practical intentions of a higher level which do not involve types of vocation or goal oriented interrelations and accomplishments at all, the more or less isolated, incidental, more or less fleeting interests.