Suppose an alien craft was detected in the solar system, something like Oumuamua, little understood with a strange trajectory. Would the United Nations investigate it or just blow it up as a threat? That’s where we begin the story in this book – the options are narrowed down because only one spacecraft is close enough to be able to intercept the object (named as Rama), and the United Planets agree to gather as much information as possible. As you would expect, there are disagreements with the approach and Mercury in particular thinks destruction is the way to go.
The story concentrates on the strange geography of the craft – 50km long on its axis, 20km across and rotating every 4 minutes. Yet it has an ocean around the centre of the axis, cities spread out across the plains and few clues as to the nature of the constructors of the craft. It’s a great book, full of ideas that must have been mind-blowing when written in 1973.
This summer Danny Bent (author of this book) visited my firm to give a talk. He related some humorous tales from his life experience to bring home his positive attitude to life – he’s been voted one of the happiest 100 people in the UK, so he’s worth listening to. As part of his session, he orchestrated a group rock/paper/scissors challenge in which I reached the final (!) – my prize was a copy of this book.
The book is Danny’s story of how he came to co-organise One Run for Boston after the Boston marathon bombings in 2013. Not only did the relay run across America raise a lot of money, it provided a focus and support network for many of the victims.
I was lucky to get a place at this month’s C++ London meet up, having a limited number of seats and being hosted by Smarkets at their offices in St Katherine’s Dock. Smarkets are an online betting exchange – and they’re currently hiring!
This evening was started by Alex Schmolck, presenting his work configuring the development and build systems for Smarkets. He’s experimented with Vagrant and Docker, but is now an advocate of Nix. He admits that Docker is initially more productive, but Nix has the edge for its efficiency and speed.
The main talk (see slides) was given by Mateusz Pusz, showing a series of examples to demonstrating how a body of code can evolve and improve significantly with the features introduced by C++11, C++14, C++17 and soon C++20.
For example, implementing functions with variable numbers of parameters – such as for populating a container of items for a testing library. With C++98, this might have led to many overloads with increasing numbers of arguments (but only ever handling up to some hand-coded limit). With C++11 onwards, you could use variadic templates, handling any number of parameters. And with C++17 onwards, you could use fold expressions to simplify the code further (no need to the ‘base class’ template overload).
Another interesting example was the evolution of Compile-Time Dispatch. Whereas even C++ 11requires hand-rolling overloads on a hierarchy of tag classes, post C++17, you can use constexpr to organise the code within a single method.
Our charity bookshop had a rather nice hardback edition of this thriller from Dan Brown’s Robert Langdon/Tom Hanks series, and I’m glad I bought it.
Here, we see Langdon as a mentor to a brilliant student, Edmond Kirsch, who has become a successful entrepreneur in the world of technology. And whereas Langdon has sometimes lacked depth, in this book his relationship with the beautiful Ambra Vidal (fiancee to the Prince Regent of Spain) is more nuanced than I expected. The book demonstrates the spread of social media and its ability to rapidly set the agenda. Even better, there’s a science fiction element to it in the form of Winston, an AI agent built and employed by Kirsch as his assistant.
There are also some quintessential Dan Brown moments, such as the hidden symbology in the Fedex logo, the history of the ampersand and, my personal favourite, the answer to I + IX (it’s 10 or 12, depending on your point of view).
The premise of the book is that Kirsch has made a great discovery about the origin and future of the planet – how did life on Earth begin and what is its destiny?
This book is an excellent primer on data science. It builds up concepts from scratch with code examples in Python. Whilst it uses some well-known libraries for utilities, the code that builds on the core Data Science concepts is all included and explained in the book.
I particularly enjoyed the conversational, often humorous style of the book. He gives a short introduction to NoSQL databases, then concludes: “Tomorrow’s flavour of the day might not even exist now, so I can’t do much more than let you know that NoSQL is a thing. So now you know. It’s a thing”. The author doesn’t get too stuck in jargon either – one example is his definition of a greedy algorithm: “… at each step, it chooses the most immediately best option” – perfect.
Some of the main topics covered are:
- Visualizing Data
- Gradient Descent
- Linear Regression
- Logistic Regression
- Neural Networks
Having covered the theory, the book extends to a few use cases – natural language processing, network analysis and collaborative filtering.
I bought a nice soft-back edition of this Jack Reacher thriller some time ago, but it was well worth re-reading. There has long been a gap in Reacher’s history – how did he go from being an elite investigator in the Military Police to travelling around America as a loner? This book fills in the gap and is one of the best in the series.
Reacher is assigned to go to Carter Crossing to shadow the town’s police department in their investigation of a murder. Although he’s supposed to be incognito, the police chief, beautiful Elizabeth Deveraux, unmasks him immediately. No matter, because the two develop a very close relationship working on the investigation together. The author plants seeds of doubt about Deveraux – perhaps she has a hazy past, taking revenge on former boyfriends? Could this murder, and two others of similarly beautiful young women, be her revenge after she was dumped by Captain Reed Riley, son of a US Senator? A side plot is that, sometimes the cover-up is worse than the crime. In this case, Reacher wants to know why local militia were employed to defend the military base outside the boundary – leading to the senseless murder of a journalist and the brother of one of the murder/rape victims. He confronts Colonel Frazer of military liaison at his office in the Pentagon – did he authorise the cover-up to protect his investment made building relationships with the Senator?
I always enjoy the Reacher books where he teams up with locals to solve the case – and as a bonus, this book features Reacher’s favourite Sergeant, Frances Neagley.
Another book from the SF Masterworks series, this one traces the adventurous Alvin, a unique individual in the city of Diaspar on Earth. Set a billion years into the future, Diaspar is the only city left, run by AI and repaired into perpetuity by autonomous robots. Yet Alvin feels that something is missing and has a deep yearning to explore beyond the city. He discovers a route to Lys, a community set in countryside far from the city, where the populace has evolved quite differently from those in Diaspar. His destiny is to unify these divided communities and to re-examine the shrouded history that separated them in the first place.