Sal, I did not confuse the messenger with the message. I am grateful to you for passing such things along for our consideration and don't hold you responsible for defending them. Jeff --------------------------------- Jeff Stollman stollman.j@gmail.com 1 202.683.8699 Truth never triumphs — its opponents just die out. Science advances one funeral at a time. Max Planck On Mon, Feb 29, 2016 at 11:01 AM, Salvatore D'Agostino <sal@idmachines.com> wrote:

Hi Jeff,

I appreciate the points, I hope you realize I am just passing along reference material and I don’t think this is some unified 7 layer model. Really just throwing it out and I recognize someone was likely riffing on 7 layers. The points you raise are good ones. IoT is a huge umbrella covering probably too many use cases, many in which there is often nesting, so taking a vehicle for example its sensors provide input to controller but also to performance measurement and maintenance databases which can then bubble up to a next layer (collision sensor, to ABS, to Cruise Control, to Heads Ups Display). So even in a given layer a lot can take place.

Pretty useful for a discussion group though, or at least that was my intention.

Best,

Sal

*From:* j stollman [mailto:stollman.j@gmail.com] *Sent:* Monday, February 29, 2016 10:48 AM *To:* Salvatore D'Agostino *Cc:* dg-idot@kantarainitiative.org *Subject:* Re: [DG-IDoT] IoT 7 layer pic

Sal,

Thank you for forwarding this graphic.

I find this graphic intriguing, and a good straw man starting point. But I am concerned that it is misleading. In the enthusiasm to try to leverage the successful pattern of the OSI model, we are force-fitting IoT into a model that doesn't quite work.

Specifically, I have the following immediate concerns:

1. IoT in this model seems to be limited to "sensors". I don't see how the Big Data layers apply to "actuators." And I don't see how the "processors" conform to any but Layers 5 and 6. Perhaps I am being narrow-minded in clinging to the notion of IoT as representing sensors, processors, and actuators (and applications?). 2. I am uncomfortable with the notion that the Cloud layer is a necessary layer. Many IoT implementations are highly localized and will not require the Cloud or Big Data.

I suspect that other concerns will arise as we look at it longer.

I find that this model represents one view on one part of IoT. It may be a big and important part. But I don't think it is adequate to define all of IoT. And I fear that it will force people into thinking about IoT in only this way and lose sight of effective and efficient solutions that do not conform to this model.

Jeff

---------------------------------

Jeff Stollman stollman.j@gmail.com 1 202.683.8699

Truth never triumphs — its opponents just die out.

Science advances one funeral at a time.

Max Planck

On Mon, Feb 29, 2016 at 8:54 AM, Salvatore D'Agostino <sal@idmachines.com> wrote:

[image: https://image-store.slidesharecdn.com/6eb9890a-3615-4dd8-9cd7-7e56d0be5518-o...]

Salvatore D'Agostino

IDmachines LLC

1264 Beacon Street, #5

Brookline, MA 02446

USA

http://www.idmachines.com

http://idmachines.blogspot.com

@idmachines

+1 617.201.4809 ph

+1 617.812.6495 fax

_______________________________________________ DG-IDoT mailing list DG-IDoT@kantarainitiative.org http://kantarainitiative.org/mailman/listinfo/dg-idot