In the ever-evolving landscape of technology, the silent auction sector is no exception. As the traditional ways of conducting auctions continue to witness a paradigm shift, silent auction platforms are being redefined by the intervention of numerous technological advancements. This transformation is fuelled by the confluence of various factors: the increasing number of tech-savvy users, the escalating proliferation of smartphones, the growing reliance on digital infrastructure, and the pervasive, ever-increasing need for efficiency and convenience.

Silent auctions, to define the term, are auctions conducted without an auctioneer. Bidders silently determine their bid for a particular item by writing it down on a bid sheet or through an electronic bidding platform. The highest bidder wins the item. In this context, silent auction platforms refer to digital infrastructures designed to facilitate such silent auctions.

To envisage the future trajectory of these platforms, it is essential to understand the current trends and probable advancements in technology that can potentially impact this sector.

AI and Machine Learning (ML): Unquestionably, Artificial Intelligence (AI) and Machine Learning (ML) are the key drivers of technological revolutions across sectors. In the case of silent auction platforms, AI and ML can provide predictive analysis of bidders' behavior, suggest ideal bidding strategies, and even automate the process of finding the highest bidder. However, the efficacy of AI and ML is directly proportional to the availability of quality data. While these tools may provide unprecedented insights and automation, concerns about data privacy and security remain a major consideration.

Blockchain Technology: In the quest for transparency and security, blockchain technology is gaining rapid traction. By offering a decentralized and immutable ledger system, blockchain can increase trust and transparency in silent auctions. This technology can effectively prevent fraudulent bids, ensuring a fair and transparent auction. However, the adoption of blockchain technology involves considerable infrastructural changes and a steep learning curve, which may be challenging.

Virtual Reality (VR) and Augmented Reality (AR): As digital experiences continue to replace physical interactions, VR and AR technologies are being seen as the next frontier for silent auction platforms. These technologies can create immersive auction environments, thereby enhancing user engagement. However, the high cost associated with developing and maintaining such advanced technologies could be a deterrent for some organizations.

Considering these emerging trends, it is apparent that the future of silent auction platforms hinges on the ongoing technological revolution, with AI, ML, blockchain, VR, and AR at the helm. However, the effective incorporation of these technologies into silent auction platforms rests upon a careful assessment of their benefits and potential pitfalls. The tradeoffs between the potential gains in efficiency, transparency, and user experience and the concerns of data security, cost, and adaptability need to be meticulously evaluated.

The pace at which these technologies are advancing, it won't be a hyperbole to surmise that silent auction platforms are on the brink of a profound transformation. Yet, it is critical to bear in mind that technology, in itself, is not a panacea. While it provides the tools to reimagine and reshape silent auction platforms, it is the seamless integration of these technologies with the understanding of user needs, preferences, and behavior that will ultimately dictate the success and acceptance of these platforms.

In conclusion, silent auction platforms are set for a technological metamorphosis. As we navigate this era of digital disruption, it is crucial to strike a balance between technological innovation and user-centric design, between embracing the new and retaining the essence of silent auctions, thus bridging the divide between the tangible past and the digital future.