The promoters of Blu-ray seem to have a gift to shoot themselves in the foot with their products. Ceaseless changes prove the inventiveness in various sectors of the electronics industry and cause hesitation among the consumers. One thus was the data base Profiles 1.0, that was the original, but then quickly replaced by the 1.1, and now by the 2.0; with the result that the majority of the equipment in use is unable to be updated for these databases.Now, it is the multi-layers that are evolving. Currently, a Blu-ray disc has two layers of 25 GB. The manufacturers have already announced prototypes of 100 GB (4 layers of 25 GB), 200 and even 250 GB (10 layers). Some others have gone even further with 320 GB (10 layers of 32 GB).Confronted by this confusion, a representative of the BDA who sets the standard has stated the following. He clearly indicated that the current blu-ray readers will be unable to read media exceeding two layers, but that 50 GB will be enough for film
