In the grand sphere of architecture and construction, the niche industry of pool building often goes unnoticed. Yet, this unique sector is ripe with constant innovation, economic implications, and a plethora of nuanced techniques that are worth delving into. This post is an exploration of the pool building industry, providing a comprehensive dissection of its key aspects and imparting insightful findings.

The pool building industry, like any other, is a machine powered by its players, i.e., stakeholders. These include architects, contractors, suppliers, customers, and governing bodies, each contributing their unique input. Architects and designers bring the artistic flair, shaping fantasies of aquatic leisure into blueprints. Contractors and builders transmute these designs into tangible realities, whilst suppliers ensure the influx of quality materials. Customers, the end-users, dictate demand trends, their needs and desires shaping the industry's course. Governing bodies provide the regulatory framework, ensuring safety and ethical standards are upheld.

Understanding the what of the industry, we delve into the goods produced. Essentially, pool builders create self-contained environments for water-based leisure and exercise. Besides the apparent physical structure, this includes integrated water filtration systems, heating mechanisms, and in some instances, digital interfaces for remote control. However, the industry's output extends beyond the physical product. Pool builders also offer consultation, design services, maintenance, and repair, encompassing a complete customer experience.

Geographically, the industry's presence is global, but its concentration varies. Sun-kissed regions with a penchant for outdoor living like California or Australia naturally house a thriving pool building industry. Yet, the advent of indoor pools and heating technologies has also enabled growth in colder territories.

Temporal analysis of the industry reveals an intriguing pattern. Pool construction often mirrors economic prosperity. During financial zeniths, pool installations skyrocket, becoming a symbol of affluence. Conversely, economic downturns see a slump in demand, as consumers prioritize essential expenditures.

The how of pool construction is a symphony of engineering, architecture, and fluid dynamics. Traditional pools employ 'gunite' or 'shotcrete' methods, involving a rebar framework sprayed over with a concrete mixture. However, contemporary techniques like Vinyl-lined or Fiberglass pools offer quicker installation and lower costs, albeit with some compromise on durability and customization.

The why of the industry is multifaceted. On the surface, pools offer a medium for recreation, fitness, and aesthetic enhancement of living spaces. However, delve deeper, and one identifies pools as symbols of status and wealth, echoes of ancient Roman and Greek civilizations where public baths were centers of social life. Moreover, the industry aids economic circulation, providing employment, and contributing to gross domestic product.

While the current state of the industry paints an engaging picture, its future trajectory is even more intriguing. The integration of technology, evident in automated cleaning systems or remote-controlled heating, heralds the dawn of 'smart' pools. Moreover, the rise in eco-conscious consumerism is driving the evolution of energy-efficient and sustainable pool construction techniques. Concepts like natural pools, which mimic self-cleaning ecosystems, are gaining traction.

This speculation, though based on current trends, is by no means definitive. Much like the fluid element it houses, the pool building industry is dynamic, ever-changing with the tides of consumer demand, economic health, and technological advancement.

In conclusion, pool building, though a niche industry, is a microcosm reflecting broader societal and economic trends. It combines the creativity of design, the precision of engineering, the pragmatism of economics, and the influence of cultural narratives to deliver not just a product, but a lifestyle embodiment. As we move forward, this industry, like the pools it creates, is sure to plunge us into deeper depths of innovation and intrigue.