Modern Russian writer Alexey Baev represents an original movement in literature, where the paradoxical nature of what is happening is taken for granted. The post-avant-garde feel is supported by competent, easy-to-follow language, novelty of motives, and unexpected plot twists. Everything that the reader sees in the author’s works seems simultaneously impossibly absurd and absolutely explicably real. The collection “Sins and Errors” are selected works by Baev. Some of them have already been available to the general public in various publications and on Internet platforms, others will see the light of day for the first time. A prominent place in the book is occupied by the mystical story “Copper Pipes,” which tells about a certain family heirloom that can work miracles and bring misfortune. The reader will find works of different genres in the collection. There is science fiction, urban fantasy, humorous notes, and even mystical realism. The book will be of interest to a wide audience.