Like in
The Kampung Boy, the scenes in
Yesterday and Today are presented in great detail. Lat shows the children playing with items constructed from simple items found in the household and nature. He also illustrates the toys' schematics. He compares the games with their modern counterparts, lamenting the loss of creativity in modern youths. Other comments on societal changes are in the book. A child is taking a swimming lesson in a pool, intently watched by his parents who have a maid in tow with various items in her hands. While the parents gesticulate wildly at their son, the lifeguard and instructor calmly sit by the pool, watching the boy's smooth progress. This scene is contrasted with Lat's own experience at the hands of his father, who casually tosses the terrified boy into a river, letting him either swim or flounder. Such details, according to Muliyadi, invoke a yearning for the past and help readers "better appreciate [the] cartoons". University lecturer Zaini Ujang viewed
Yesterday and Todays comparisons as criticisms of society, putting forth the question of whether people should accept "development" to simply mean discarding the old for the new without regards to its value. Professor Fuziah of the
National University of Malaysia interpreted the book's ending as a wakeup call to parents, questioning them if they should deny their children a more relaxed childhood. Lent agreed, saying that Lat had asserted the theme from the start, showing him and his childhood friends "not in a hurry to grow up".
Art historian,
Redza Piyadasa argues that the book is an "essay in nostalgia, documenting how interesting and creative rural childhoods can be" compared to "the urbanized childhoods to which Lat's children are exposed". Redza hinted that Lat's other goal was to point out the "dehumanising environment" that Malaysian urban children are growing up in. ==Reception and legacy==