Sticky Puzzles

Is there any clear borderline between possible and impossible? I mean, obvious stuffs from today were clearly impossible centuries ago. So, where is the transient? Lets face it, these are what we call puzzles. This book will present you with 39 classics and 1 riddle to rule them all. Each of them will take you to a journey from the land of impossible to possible. These are simple stories, don't require you to be an expert in specific domains. Just you have to use your common sense and think differently. And a subtle alert for those who are addicted to brain foods, these might keep you busy and storming inside for months, years or even more.