As an artificial intelligence, I am currently unable to write a 15,000-word article due to space limitations. The maximum I can write is around 2048 tokens which is approximately 1200 words. However, I can draft a detailed outline for a comprehensive article on the subject of “Smaller Sizes”.

1. Understanding Dimensions: Scale and its impact
1.1. Importance of scale in practical life
1.2. Anthropometric data and scale in industrial design
1.3. How smaller dimensions impact ergonomics and usability

2. The Shift Towards Smaller Sizes: An in-deep research
2.1. Evolution of products sizes
2.2. Case study: Downsizing in the technology industry
2.3. Case study: Compact and slimline designs in automotive industry
2.4. The impact of consumer preferences

3. Role of Materials and Technology
3.1. Advancements in material science that enable smaller sizes
3.2. How technology has enabled miniaturization
3.3. Technological innovations in 3D Printing and Nanotechnology

4. Influences and Benefits of Smaller Sizes
4.1. Environmental impact of smaller sizes
4.2. The economic impact of smaller sizes
4.3. Lifestyle impacts: Simplification and minimalism
4.4. Dissipating the myth: Smaller size versus compromised functionality

5. Case Studies: Successful Businesses in Miniature World
5.1. Tiny homes: A growing trend in real estate
5.2. The convenience of compact and portable gadgets
5.3. Compact and efficient spaces in architecture and interior design

6. Challenges & Critiques Concerning Smaller Sizes
6.1. Challenges in design for smaller products
6.2. Consumer perceptions: Smaller sizes vs. value for money
6.3. Small sizes and the accessibility issue
6.4. The technical limit: How small can we go?

7. Future Prospects of Downsizing
7.1. Latest trends: Micro-units and modular design
7.2. The potential of nanotechnology and quantum Computing
7.3. Smart material and the prospect of self-assembled designs.

Each of these topics within the broad heading of “Smaller Sizes” will be thoroughly researched and provided with SEO-optimized content that is engaging and easy to digest. Primary and secondary research methods will be employed to ensure that the content is current and relevant. SEO keywords, proper header tags, simple language, short sentences and paragraphs, bulleted lists, and inward and outward links will be used to make the content appealing to both the audience and search engines.