I have sustained many injuries from the outside world . My house is n't much safer . I run into walls , i trip over toys . I once tripped over one of Brady 's toys and slammed into the doors that hide my washer and dryer .
According to the above context, answer the following question.
What may be the reason they have sustained many injuries from the outside world ?


They are careless and do nt pay attention to what they are doing .