First the good:I think this book has some interesting and imaginative ideas and I think it is worth reading (for what it's worth, you can buy sanded planks with rounded corners in the fittings department of your local lumberyard and if not, it is not that hard to sand corners down, etc). Many other ideas may be inspiring to many new parents.Now the negative:There are many ideas in this book which are useful but require close supervision. I didn't feel like the book discussed safety measures enough. For example, I personally think that toys like walkers are ok as long as one is closely supervising the infant (whether they provide enough value is another question), and many of the toys seemed to me to be possible choking hazards if used without proper supervisionAll in all, I would recommend the book. I would however suggest reading up on infant safety from other sources and reading this book afterwards.