Because it can be confusing when an exercise asks a question that is internally and semantically coherent
while simultanously being factually incorrect from the perspective of the student
(i.e. if the student is in real life factually 35 years old, and the correct answer to the exercise is that her son is 60 years old)
this commit will:
narrow down some age spans in lesson 10, to make famliy relation terms that generally apply to young people consider a younger age span (e.g. son, younger sister < 15 years old) and famliy relation terms that generally apply to older people consider an older age span (e.g. grandmother > 60 years old)
Because it can be confusing when an exercise asks a question that is internally and semantically coherent while simultanously being factually incorrect from the perspective of the student (i.e. if the student is in real life factually 35 years old, and the correct answer to the exercise is that her son is 60 years old)
this commit will:
Resolves #439
Certification