First off, it's trippy. Third, it draws you in. The show is a mystery of sorts. There's a lot we don't know in the beginning, and as we're given clues and answers about the truth, we end up with more questions needing to be answered. There are long scenes featuring unusual camera work, and scenes with little or no dialogue.
Some scenes are altogether impossible to decipher.
There are details at every little turn, some of which are crucial while others might be meant to distract you. The show demands your concentration, and you might find yourself very willing to give it. Fourth, it's a computer lover's show. If you can appreciate the appeal of a powerful computer, or the feeling of urgency associated with needing a new one, you'll like this show. If you live a good percentage of your life online, this show speaks to you.